You must be logged in to add problems to this category

implementation problems
Problem Name Online Judge Year Contest Difficulty Level
1 Jzzhu and Sequences Categories Codeforces Codeforces Round #257 (Div. 2) 1
2 Pashmak and Flowers Categories Codeforces Codeforces Round #261 (Div. 2) 1
3 Mishka and Game Categories Codeforces Codeforces Round #365 (Div. 2) 1
4 Sereja and Dima Categories Codeforces Codeforces Round #223 (Div. 2) 1
5 Next Round Categories Codeforces VK Cup 2012 Qualification Round 1 1
6 Minimum Difficulty Categories Codeforces Codeforces Round #283 (Div. 2) 1
7 Crazy Computer Categories Codeforces Codeforces Round #372 (Div. 2) 1
8 Luxurious Houses Categories Codeforces Codeforces Round #322 (Div. 2) 1
9 Hulk Categories Codeforces Codeforces Round #366 (Div. 2) 1
10 Amusing Joke Categories Codeforces Codeforces Round #101 (Div. 2) 1
11 Simple Equations Categories UVA 1
12 Queue Categories Codeforces Codeforces Round #303 (Div. 2) 1
13 Anton and Letters Categories Codeforces Codeforces Round #253 (Div. 2) 1
14 MUH and Sticks Categories Codeforces Codeforces Round #269 (Div. 2) 1
15 Cheap Travel Categories Codeforces Codeforces Round #266 (Div. 2) 1
16 Counterexample Categories Codeforces Codeforces Round #275 (Div. 2) 1
17 Watermelon Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 1
18 Nicholas and Permutation Categories Codeforces Codeforces Round #354 (Div. 2) 1
19 Devu, the Dumb Guy Categories Codeforces Codeforces Round #251 (Div. 2) 1
20 Odds and Ends Categories Codeforces Codeforces Round #431 (Div. 2) 1
21 Arpa’s hard exam and Mehrdad’s naive cheat Categories Codeforces Codeforces Round #383 (Div. 2) 1
22 Cookies Categories Codeforces Codeforces Beta Round #94 (Div. 2 Only) 1
23 Pangram Categories Codeforces Codeforces Round #295 (Div. 2) 1
24 What's Next? Categories Live Archive 2010 Africa/Middle East - Arab Contest 1
25 Soft Drinking Categories Codeforces Codeforces Round #107 (Div. 2) 1
26 Identifying tea Categories Live Archive 2015 Latin America 1
27 Supercentral Point Categories Codeforces Codeforces Round #112 (Div. 2) 1
28 Vanya and Books Categories Codeforces Codeforces Round #308 (Div. 2) 1
29 Fox And Snake Categories Codeforces Codeforces Round #290 (Div. 2) 1
30 Two Buttons Categories Codeforces Codeforces Round #295 (Div. 2) 1
31 Winner Categories Codeforces Codeforces Beta Round #2 1
32 Building Permutation Categories Codeforces Codeforces Round #175 (Div. 2) 1
33 Contest Categories Codeforces Codeforces Round #285 (Div. 2) 1
34 Boy or Girl Categories Codeforces Codeforces Round #146 (Div. 2) 1
35 Rewards Categories Codeforces Codeforces Round #256 (Div. 2) 1
36 Little Pony and Crystal Mine Categories Codeforces Codeforces Round #259 (Div. 2) 1
37 One-dimensional Japanese Crossword Categories Codeforces Codeforces Round #374 (Div. 2) 1
38 Vitaly and Night Categories Codeforces Codeforces Round #330 (Div. 2) 1
39 Queue on Bus Stop Categories Codeforces Codeforces Round #249 (Div. 2) 1
40 T-primes Categories Codeforces Codeforces Round #142 (Div. 2) 1
41 Hongcow Learns the Cyclic Shift Categories Codeforces Codeforces Round #385 (Div. 2) 1
42 Multiplication Table Categories Codeforces Codeforces Round #319 (Div. 2) 1
43 Omar Categories A2 Online Judge 1
44 Football Categories Codeforces Codeforces Beta Round #77 (Div. 2 Only) 1
45 Exam Categories Codeforces Codeforces Round #298 (Div. 2) 1
46 Flipping Game Categories Codeforces Codeforces Round #191 (Div. 2) 1
47 Lights Out Categories Codeforces Codeforces Round #168 (Div. 2) 1
48 The Useless Toy Categories Codeforces Codeforces Round #426 (Div. 2) 1
49 Magic Numbers Categories Codeforces Codeforces Round #189 (Div. 2) 1
50 Buttons Categories Codeforces Codeforces Round #164 (Div. 2) 1
51 k-String Categories Codeforces Codeforces Round #135 (Div. 2) 1
52 FoxAndGame Categories TopCoder SRM 571 - Div2 easy] (15491) 1
53 Dreamoon and Stairs Categories Codeforces Codeforces Round #272 (Div. 2) 1
54 Black Square Categories Codeforces Codeforces Round #247 (Div. 2) 1
55 Chloe and the sequence Categories Codeforces Codeforces Round #384 (Div. 2) 1
56 String Task Categories Codeforces Codeforces Beta Round #89 (Div. 2) 1
57 Game With Sticks Categories Codeforces Codeforces Round #258 (Div. 2) 1
58 Vasya and Socks Categories Codeforces Codeforces Round #262 (Div. 2) 1
59 Roma and Lucky Numbers Categories Codeforces Codeforces Round #160 (Div. 2) 1
60 Insomnia cure Categories Codeforces Codeforces Round #105 (Div. 2) 1
61 New Year and Days Categories Codeforces Good Bye 2015 1
62 Nearly Lucky Number Categories Codeforces Codeforces Beta Round #84 (Div. 2 Only) 1
63 Present from Lena Categories Codeforces Codeforces Beta Round #89 (Div. 2) 1
64 Ilya and Diplomas Categories Codeforces Codeforces Round #311 (Div. 2) 1
65 Valera and Plates Categories Codeforces Codeforces Round #216 (Div. 2) 1
66 Bear and Big Brother Categories Codeforces Codeforces Round #405 (rated, Div. 2, based on VK Cup 2017 Round 1) 1
67 1, 10, 100, 1000... Categories Timus 1
68 Quasi Binary Categories Codeforces Codeforces Round #300 1
69 Soldier and Bananas Categories Codeforces Codeforces Round #304 (Div. 2) 1
70 DZY Loves Chessboard Categories Codeforces Codeforces Round #254 (Div. 2) 1
71 Playing with Paper Categories Codeforces Codeforces Round #296 (Div. 2) 1
72 Dima and Friends Categories Codeforces Codeforces Round #167 (Div. 2) 1
73 Circle Line Categories Codeforces Codeforces Round #170 (Div. 2) 1
74 Bear and Five Cards Categories Codeforces Codeforces Round #356 (Div. 2) 1
75 Professor GukiZ's Robot Categories Codeforces Educational Codeforces Round 6 1
76 Beru-taxi Categories Codeforces Codeforces Round #367 (Div. 2) 1
77 Ostap and Grasshopper Categories Codeforces Codeforces Round #382 (Div. 2) 1
78 Coder Categories Codeforces Codeforces Round #225 (Div. 2) 1
79 Opponents Categories Codeforces Codeforces Round #360 (Div. 2) 1
80 Filya and Homework Categories Codeforces Codeforces Round #371 (Div. 2) 1
81 Tram Categories Codeforces Codeforces Beta Round #87 (Div. 2 Only) 1
82 Jeff and Digits Categories Codeforces Codeforces Round #204 (Div. 2) 1
83 Currency System in Geraldion Categories Codeforces Codeforces Round #313 (Div. 2) 1
84 Chewba?ca and Number Categories Codeforces Codeforces Round #291 (Div. 2) 1
85 inc ARG Categories Codeforces Codeforces Round #265 (Div. 2) 1
86 Colorful Stones (Simplified Edition) Categories Codeforces Codeforces Round #162 (Div. 2) 1
87 Face Detection Categories Codeforces Looksery Cup 2015 1
88 Free Cash Categories Codeforces Codeforces Round #147 (Div. 2) 1
89 Suffix Structures Categories Codeforces Codeforces Round #256 (Div. 2) 1
90 Taxi Categories Codeforces VK Cup 2012 Qualification Round 1 1
91 Little Pony and Sort by Shift Categories Codeforces Codeforces Round #259 (Div. 2) 1
92 Bus to Udayland Categories Codeforces Codeforces Round #369 (Div. 2) 1
93 New Year Candles Categories Codeforces Good Bye 2013 1
94 Marks Categories Codeforces Codeforces Round #108 (Div. 2) 1
95 USB Flash Drives Categories Codeforces Educational Codeforces Round 3 1
96 Different is Good Categories Codeforces Codeforces Round #352 (Div. 2) 1
97 Team Categories Codeforces Codeforces Round #143 (Div. 2) 1
98 Team Categories Codeforces Codeforces Round #235 (Div. 2) 1
99 Find Extra One Categories Codeforces Codeforces Round #450 (Div. 2) 1
100 Life Without Zeros Categories Codeforces Codeforces Beta Round #67 (Div. 2) 1
101 Petr and Book Categories Codeforces Codeforces Beta Round #99 (Div. 2) 1
102 Alena's Schedule Categories Codeforces Codeforces Round #325 (Div. 2) 1
103 Shortest path of the king Categories Codeforces Codeforces Beta Round #3 1
104 An abandoned sentiment from past Categories Codeforces Codeforces Round #418 (Div. 2) 1
105 A and B and Chess Categories Codeforces Codeforces Round #294 (Div. 2) 1
106 Arm Wrestling Tournament Categories Live Archive 2010 Asia - Jakarta 1
107 I Wanna Be the Guy Categories Codeforces Codeforces Round #268 (Div. 2) 1
108 Appleman and Easy Task Categories Codeforces Codeforces Round #263 (Div. 2) 1
109 Initial Bet Categories Codeforces Codeforces Round #273 (Div. 2) 1
110 Interesting drink Categories Codeforces Codeforces Round #367 (Div. 2) 1
111 Hexadecimal's theorem Categories Codeforces Codeforces Round #125 (Div. 2) 1
112 Beautiful Matrix Categories Codeforces Codeforces Round #161 (Div. 2) 1
113 Dubstep Categories Codeforces Codeforces Round #130 (Div. 2) 1
114 Two Bases Categories Codeforces Codeforces Round #333 (Div. 2) 1
115 Petya and Strings Categories Codeforces Codeforces Beta Round #85 (Div. 2 Only) 1
116 GukiZ and Contest Categories Codeforces Codeforces Round #307 (Div. 2) 1
117 Ultra-Fast Mathematician Categories Codeforces Codeforces Beta Round #57 (Div. 2) 1
118 Cinema Line Categories Codeforces Codeforces Round #202 (Div. 2) 1
119 Epic Game Categories Codeforces Codeforces Beta Round #90 1
120 Maximum in Table Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 1
121 Sort the Array Categories Codeforces Codeforces Round #258 (Div. 2) 1
122 Drinks Categories Codeforces Codeforces Round #126 (Div. 2) 1
123 Anton and Polyhedrons Categories Codeforces Codeforces Round #404 (Div. 2) 1
124 Soldier and Badges Categories Codeforces Codeforces Round #304 (Div. 2) 1
125 Helpful Maths Categories Codeforces Codeforces Round #197 (Div. 2) 1
126 Watching a movie Categories Codeforces Codeforces Round #284 (Div. 2) 1
127 Lucky Sum of Digits Categories Codeforces Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only) 1
128 Memory and Crow Categories Codeforces Codeforces Round #370 (Div. 2) 1
129 Keyboard Categories Codeforces Codeforces Round #271 (Div. 2) 1
130 Kuriyama Mirai's Stones Categories Codeforces Codeforces Round #248 (Div. 2) 1
131 Books Categories Codeforces Codeforces Round #171 (Div. 2) 1
132 Free Ice Cream Categories Codeforces Codeforces Round #359 (Div. 2) 1
133 Borya's Diagnosis Categories Codeforces Codeforces Round #443 (Div. 2) 1
134 Brain's Photos Categories Codeforces Codeforces Round #368 (Div. 2) 1
135 Translation Categories Codeforces Codeforces Beta Round #40 (Div. 2) 1
136 Presents Categories Codeforces Codeforces Beta Round #97 (Div. 2) 1
137 Asphalting Roads Categories Codeforces Codeforces Round #323 (Div. 2) 1
138 Key races Categories Codeforces Codeforces Round #427 (Div. 2) 1
139 Police Recruits Categories Codeforces Codeforces Round #244 (Div. 2) 1
140 Vladik and flights Categories Codeforces Codeforces Round #384 (Div. 2) 1
141 Inbox (100500) Categories Codeforces Codeforces Round #265 (Div. 2) 1
142 Registration System Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 1
143 Roadside Trees (Simplified Edition) Categories Codeforces Codeforces Round #162 (Div. 2) 1
144 Fibonacci Freeze Categories UVA 1
145 Karen and Morning Categories Codeforces Codeforces Round #419 (Div. 2) 1
146 Word Categories Codeforces Codeforces Beta Round #55 (Div. 2) 1
147 Bachgold Problem Categories Codeforces Codeforces Round #388 (Div. 2) 1
148 Double Cola Categories Codeforces Yandex.Algorithm 2011 Qualification 2 1
149 Round House Categories Codeforces Codeforces Round #346 (Div. 2) 1
150 Lucky Ticket Categories Codeforces Codeforces Round #104 (Div. 2) 1
151 Perfect Permutation Categories Codeforces Codeforces Round #144 (Div. 2) 1
152 HQ9+ Categories Codeforces Codeforces Beta Round #96 (Div. 2) 1
153 Kefa and First Steps Categories Codeforces Codeforces Round #321 (Div. 2) 1
154 Cut Ribbon Categories Codeforces Codeforces Round #119 (Div. 2) 1
155 Tavas and Nafas Categories Codeforces Codeforces Round #299 (Div. 2) 1
156 Cakeminator Categories Codeforces Codeforces Round #192 (Div. 2) 1
157 Lunch Rush Categories Codeforces Codeforces Round #169 (Div. 2) 1
158 Given Length and Sum of Digits... Categories Codeforces Codeforces Round #277.5 (Div. 2) 1
159 Summer Camp Categories Codeforces Codeforces Round #352 (Div. 2) 1
160 Elections Categories Codeforces Codeforces Round #316 (Div. 2) 1
161 A and B and Compilation Errors Categories Codeforces Codeforces Round #294 (Div. 2) 1
162 Ws Cipher Categories SPOJ 1
163 Fancy Fence Categories Codeforces Codeforces Round #165 (Div. 2) 1
164 k-Tree Categories Codeforces Codeforces Round #247 (Div. 2) 1
165 Snacktower Categories Codeforces Codeforces Round #398 (Div. 2) 1
166 Arya and Bran Categories Codeforces Codeforces Round #428 (Div. 2) 1
167 Bytelandian gold coins Categories SPOJ 1
168 Business trip Categories Codeforces Codeforces Round #106 (Div. 2) 1
169 Uncowed Forces Categories Codeforces Codeforces Round #334 (Div. 2) 1
170 TL Categories Codeforces Codeforces Round #203 (Div. 2) 1
171 Lala Land and Apple Trees Categories Codeforces Codeforces Round #312 (Div. 2) 1
172 Meteoros Categories SPOJ Brazil 1
173 Arrival of the General Categories Codeforces Codeforces Round #103 (Div. 2) 1
174 Vanya and Cubes Categories Codeforces Codeforces Round #280 (Div. 2) 1
175 Xenia and Ringroad Categories Codeforces Codeforces Round #197 (Div. 2) 1
176 Slightly Decreasing Permutations Categories Codeforces Codeforces Round #175 (Div. 2) 1
177 New Year Transportation Categories Codeforces Good Bye 2014 1
178 Drazil and Factorial Categories Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 1
179 Gravity Flip Categories Codeforces Codeforces Round #238 (Div. 2) 1
180 Taymyr is calling you Categories Codeforces Codeforces Round #395 (Div. 2) 1
181 Calculating Function Categories Codeforces Codeforces Round #277 (Div. 2) 1
182 Vanya and Fence Categories Codeforces Codeforces Round #355 (Div. 2) 1
183 Is your horseshoe on the other hoof? Categories Codeforces Codeforces Round #141 (Div. 2) 1
184 Wet Shark and Odd and Even Categories Codeforces Codeforces Round #341 (Div. 2) 1
185 Far Relative’s Birthday Cake Categories Codeforces Codeforces Round #343 (Div. 2) 1
186 Greed Categories Codeforces Codeforces Round #446 (Div. 2) 1
187 cAPS lOCK Categories Codeforces Codeforces Beta Round #95 (Div. 2) 1
188 Bear and Poker Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 1
189 Robot's Task Categories Codeforces Codeforces Round #323 (Div. 2) 1
190 Ilya and Bank Account Categories Codeforces Codeforces Round #186 (Div. 2) 1
191 Worms Categories Codeforces Codeforces Round #271 (Div. 2) 1
192 Bear and Raspberry Categories Codeforces Codeforces Round #226 (Div. 2) 1
193 Bulbs Categories Codeforces Codeforces Round #338 (Div. 2) 1
194 Memory and Trident Categories Codeforces Codeforces Round #370 (Div. 2) 1
195 Domino Categories Codeforces Codeforces Round #205 (Div. 2) 1
196 Reconnaissance 2 Categories Codeforces Codeforces Beta Round #34 (Div. 2) 1
197 Lineland Mail Categories Codeforces Codeforces Round #Pi (Div. 2) 1
198 Army Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 1
199 Hello, world! Categories TJU 1
200 George and Accommodation Categories Codeforces Codeforces Round #267 (Div. 2) 1
201 Stones on the Table Categories Codeforces Codeforces Round #163 (Div. 2) 1
202 Wachovia Bank Categories SPOJ 1
203 Anastasia and pebbles Categories Codeforces Codeforces Round #407 (Div. 2) 1
204 Prison Transfer Categories Codeforces Codeforces Round #244 (Div. 2) 1
205 Amr and Music Categories Codeforces Codeforces Round #287 (Div. 2) 1
206 Jzzhu and Children Categories Codeforces Codeforces Round #257 (Div. 2) 1
207 MODIFY SEQUENCE Categories SPOJ 1
208 Pashmak and Garden Categories Codeforces Codeforces Round #261 (Div. 2) 1
209 Scarborough Fair Categories Codeforces Codeforces Round #449 (Div. 2) 1
210 Tanya and Toys Categories Codeforces Codeforces Round #346 (Div. 2) 1
211 Patrick and Shopping Categories Codeforces Codeforces Round #332 (Div. 2) 1
212 Candy Bags Categories Codeforces Codeforces Round #194 (Div. 2) 1
213 Two Substrings Categories Codeforces Codeforces Round #306 (Div. 2) 1
214 Magnets Categories Codeforces Codeforces Round #200 (Div. 2) 1
215 Valera and X Categories Codeforces Codeforces Round #237 (Div. 2) 1
216 Vladik and Courtesy Categories Codeforces Codeforces Round #416 (Div. 2) 1
217 Vasya the Hipster Categories Codeforces Codeforces Round #322 (Div. 2) 1
218 Normalized Form Categories Live Archive 2010 Africa/Middle East - Arab Contest 1
219 Tavas and SaDDas Categories Codeforces Codeforces Round #299 (Div. 2) 1
220 Toy Cars Categories Codeforces Codeforces Round #303 (Div. 2) 1
221 Little Girl and Maximum Sum Categories Codeforces Codeforces Round #169 (Div. 2) 1
222 Team Olympiad Categories Codeforces Codeforces Round #279 (Div. 2) 1
223 Bit++ Categories Codeforces Codeforces Round #173 (Div. 2) 1
224 Area of a Circle Categories URI 1
225 A and B and Team Training Categories Codeforces Codeforces Round #294 (Div. 2) 1
226 Chips Categories Codeforces Codeforces Beta Round #75 (Div. 2 Only) 1
227 Greg's Workout Categories Codeforces Codeforces Round #156 (Div. 2) 1
228 Balloons Colors Categories A2 Online Judge 1
229 Choosing Teams Categories Codeforces Codeforces Round #246 (Div. 2) 1
230 Bear and Finding Criminals Categories Codeforces Codeforces Round #356 (Div. 2) 1
231 Devu, the Singer and Churu, the Joker Categories Codeforces Codeforces Round #251 (Div. 2) 1
232 Timofey and cubes Categories Codeforces Codeforces Round #395 (Div. 2) 1
233 Simple Game Categories Codeforces Codeforces Round #316 (Div. 2) 1
234 Spreadsheet Categories Codeforces Codeforces Beta Round #1 1
235 The Artful Expedient Categories Codeforces Codeforces Round #439 (Div. 2) 1
236 Vanya and Table Categories Codeforces Codeforces Round #308 (Div. 2) 1
237 Borze Categories Codeforces Codeforces Beta Round #32 (Div. 2, Codeforces format) 1
238 Shaass and Oskols Categories Codeforces Codeforces Round #178 (Div. 2) 1
239 Fibonacci Numbers Categories TJU 1
240 Caisa and Sugar Categories Codeforces Codeforces Round #264 (Div. 2) 1
241 Combination Lock Categories Codeforces Codeforces Round #301 (Div. 2) 1
242 Mike and Fax Categories Codeforces Codeforces Round #305 (Div. 2) 1
243 Adding Reversed Numbers Categories TJU 1
244 DZY Loves Strings Categories Codeforces Codeforces Round #255 (Div. 2) 1
245 A Good Contest Categories Codeforces Codeforces Round #357 (Div. 2) 1
246 OR in Matrix Categories Codeforces Codeforces Round #277 (Div. 2) 1
247 Valera and Antique Items Categories Codeforces Codeforces Round #252 (Div. 2) 1
248 Shell Game Categories Codeforces Codeforces Round #401 (Div. 2) 1
249 Vanya and Cards Categories Codeforces Codeforces Round #235 (Div. 2) 1
250 Generous Kefa Categories Codeforces Codeforces Round #429 (Div. 2) 1
251 Bear and Elections Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 1
252 Ilya and Queries Categories Codeforces Codeforces Round #186 (Div. 2) 1
253 Berland National Library Categories Codeforces Codeforces Round #Pi (Div. 2) 1
254 Young Physicist Categories Codeforces Codeforces Beta Round #63 (Div. 2) 1
255 Array Categories Codeforces Codeforces Round #181 (Div. 2) 1
256 Fedor and New Game Categories Codeforces Codeforces Round #267 (Div. 2) 1
257 Queue at the School Categories Codeforces Codeforces Round #163 (Div. 2) 1
258 Treats for the Cows Categories SPOJ 1
259 Clock Hands Categories UVA 1
260 Two Bags of Potatoes Categories Codeforces Codeforces Round #148 (Div. 2) 2
261 Minimum Number Categories SPOJ 2
262 Vika and Squares Categories Codeforces Codeforces Round #337 (Div. 2) 2
263 Vasily the Bear and Triangle Categories Codeforces Codeforces Round #195 (Div. 2) 2
264 Not Afraid Categories Codeforces Codeforces Round #406 (Div. 2) 2
265 Palindromic Times Categories Codeforces Codeforces Beta Round #83 (Div. 2 Only) 2
266 Difference Row Categories Codeforces Codeforces Round #201 (Div. 2) 2
267 IQ Test Categories Codeforces Codeforces Round #176 (Div. 2) 2
268 Sereja and Coat Rack Categories Codeforces Codeforces Round #215 (Div. 2) 2
269 Cutting Banner Categories Codeforces Codeforces Round #300 2
270 Sum of Digits Categories Codeforces Codeforces Beta Round #79 (Div. 2 Only) 2
271 Football Kit Categories Codeforces Codeforces Round #246 (Div. 2) 2
272 Dima and Continuous Line Categories Codeforces Codeforces Round #208 (Div. 2) 2
273 Robot Sequence Categories Codeforces 8VC Venture Cup 2016 - Elimination Round 2
274 Replacement Categories Codeforces Codeforces Round #316 (Div. 2) 2
275 Fixing Typos Categories Codeforces Codeforces Round #211 (Div. 2) 2
276 Escape from Stones Categories Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 2
277 Bicycle Chain Categories Codeforces Codeforces Round #132 (Div. 2) 2
278 Sereja and Mugs Categories Codeforces Codeforces Round #243 (Div. 2) 2
279 Alyona and copybooks Categories Codeforces Codeforces Round #381 (Div. 2) 2
280 Sinking Ship Categories Codeforces Codeforces Beta Round #59 (Div. 2) 2
281 Roman Numerals Categories UVA 2
282 Mike and Fun Categories Codeforces Codeforces Round #305 (Div. 2) 2
283 Vasya and Football Categories Codeforces Codeforces Round #281 (Div. 2) 2
284 Xenia and Divisors Categories Codeforces Codeforces Round #199 (Div. 2) 2
285 Next Test Categories Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 2
286 Bear and Displayed Friends Categories Codeforces VK Cup 2016 - Round 1 2
287 Lucky Conversion Categories Codeforces Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2) 2
288 The Child and Homework Categories Codeforces Codeforces Round #250 (Div. 2) 2
289 The Time Categories Codeforces Educational Codeforces Round 7 2
290 Comparing Strings Categories Codeforces Codeforces Round #118 (Div. 2) 2
291 Interview Categories Codeforces Codeforces Round #344 (Div. 2) 2
292 Palindrome Transformation Categories Codeforces Codeforces Round #277 (Div. 2) 2
293 George and Job Categories Codeforces Codeforces Round #267 (Div. 2) 2
294 Comparing Two Long Integers Categories Codeforces Educational Codeforces Round 5 2
295 Case of Fake Numbers Categories Codeforces Codeforces Round #310 (Div. 2) 2
296 Super Over Categories SPOJ 2
297 Mashmokh and Lights Categories Codeforces Codeforces Round #240 (Div. 2) 2
298 Little Elephant and Rozdil Categories Codeforces Codeforces Round #129 (Div. 2) 2
299 Cd and pwd commands Categories Codeforces VK Cup 2012 Qualification Round 1 2
300 Vladik and Complicated Book Categories Codeforces Codeforces Round #416 (Div. 2) 2
301 Fixed Points Categories Codeforces Codeforces Round #201 (Div. 2) 2
302 Developing Skills Categories Codeforces Codeforces Round #322 (Div. 2) 2
303 Lottery Categories Codeforces 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) 2
304 Handball Categories UVA 2
305 Removing Columns Categories Codeforces Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1) 2
306 Arpa and a research in Mexican wave Categories Codeforces Codeforces Round #432 (Div. 2, based on IndiaHacks Final Round 2017) 2
307 Strings of Power Categories Codeforces Codeforces Round #188 (Div. 2) 2
308 Shooshuns and Sequence Categories Codeforces Codeforces Round #137 (Div. 2) 2
309 Kitahara Haruki's Gift Categories Codeforces Codeforces Round #248 (Div. 2) 2
310 Eugeny and Array Categories Codeforces Codeforces Round #182 (Div. 2) 2
311 Inna and Choose Options Categories Codeforces Codeforces Round #234 (Div. 2) 2
312 Petya and Countryside Categories Codeforces Codeforces Beta Round #61 (Div. 2) 2
313 Group of Students Categories Codeforces Codeforces Round #207 (Div. 2) 2
314 Saitama Destroys Hotel Categories Codeforces Codeforces Round #336 (Div. 2) 2
315 Burning Midnight Oil Categories Codeforces Codeforces Round #112 (Div. 2) 2
316 Fox and Cross Categories Codeforces Codeforces Round #228 (Div. 2) 2
317 Greg and Array Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 2
318 Bridge Hand Evaluator Categories UVA 2
319 Vasya and Wrestling Categories Codeforces Codeforces Round #281 (Div. 2) 2
320 George and Sleep Categories Codeforces Codeforces Round #227 (Div. 2) 2
321 Wilbur and Swimming Pool Categories Codeforces Codeforces Round #331 (Div. 2) 2
322 The Alphabet Sticker Categories A2 Online Judge 2
323 Valera and Tubes Categories Codeforces Codeforces Round #252 (Div. 2) 2
324 Print Check Categories Codeforces Codeforces Round #344 (Div. 2) 2
325 Set of Strings Categories Codeforces Codeforces Round #302 (Div. 2) 2
326 SwapSort Categories Codeforces Codeforces Round #277.5 (Div. 2) 2
327 Levko and Table Categories Codeforces Codeforces Round #210 (Div. 2) 2
328 Beautiful Sets of Points Categories Codeforces Codeforces Round #164 (Div. 2) 2
329 Shower Line Categories Codeforces Codeforces Round #247 (Div. 2) 2
330 Vanya and Food Processor Categories Codeforces Codeforces Round #355 (Div. 2) 2
331 Cupboards Categories Codeforces Codeforces Round #152 (Div. 2) 2
332 Little Dima and Equation Categories Codeforces Codeforces Round #262 (Div. 2) 2
333 Thor Categories Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 2
334 Ksenia and Pan Scales Categories Codeforces Codeforces Round #224 (Div. 2) 2
335 New Year and Old Property Categories Codeforces Good Bye 2015 2
336 Wrath Categories Codeforces Codeforces Round #446 (Div. 2) 2
337 Pasha and Tea Categories Codeforces Codeforces Round #311 (Div. 2) 2
338 Tourist's Notes Categories Codeforces Codeforces Round #300 2
339 Blackjack Categories Codeforces Codeforces Beta Round #80 (Div. 2 Only) 2
340 DZY Loves Sequences Categories Codeforces Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2) 2
341 SOLDIERS Categories SPOJ 2
342 Factory Categories Codeforces Codeforces Round #276 (Div. 2) 2
343 Lever Categories Codeforces Codeforces Round #221 (Div. 2) 2
344 Effective Approach Categories Codeforces Codeforces Round #140 (Div. 2) 2
345 Grandfather Dovlet’s calculator Categories Codeforces Educational Codeforces Round 6 2
346 Restoring Password Categories Codeforces Codeforces Beta Round #76 (Div. 2 Only) 2
347 Rank List Categories Codeforces Codeforces Round #113 (Div. 2) 2
348 Gena's Code Categories Codeforces Codeforces Round #339 (Div. 2) 2
349 Little Pigs and Wolves Categories Codeforces Codeforces Beta Round #87 (Div. 2 Only) 2
350 Jeff and Periods Categories Codeforces Codeforces Round #204 (Div. 2) 2
351 Gerald is into Art Categories Codeforces Codeforces Round #313 (Div. 2) 2
352 Tanya and Postcard Categories Codeforces Codeforces Round #293 (Div. 2) 2
353 Sail Categories Codeforces Codeforces Round #180 (Div. 2) 2
354 Little Elephant and Magic Square Categories Codeforces Codeforces Round #157 (Div. 2) 2
355 Photo to Remember Categories Codeforces VK Cup 2015 - Qualification Round 1 2
356 Alternating Current Categories Codeforces Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2) 2
357 Mr. Kitayuta's Gift Categories Codeforces Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) 2
358 Find the Format String Categories Live Archive 2008 Asia - Dhaka 2
359 Little Artem and Grasshopper Categories Codeforces VK Cup 2016 - Round 2 2
360 Collecting Beats is Fun Categories Codeforces Codeforces Round #219 (Div. 2) 2
361 Queries on a String Categories Codeforces Educational Codeforces Round 1 2
362 New Year Present Categories Codeforces Good Bye 2013 2
363 The Best Gift Categories Codeforces Educational Codeforces Round 3 2
364 Table Tennis Categories Codeforces Codeforces Round #443 (Div. 2) 2
365 PATHS Categories SPOJ 2
366 Okabe and Future Gadget Laboratory Categories Codeforces Codeforces Round #420 (Div. 2) 2
367 Laurenty and Shop Categories Codeforces Codeforces Round #325 (Div. 2) 2
368 Sea and Islands Categories Codeforces Codeforces Round #302 (Div. 2) 2
369 Petya and Staircases Categories Codeforces Codeforces Round #212 (Div. 2) 2
370 Chat Online Categories Codeforces Codeforces Round #268 (Div. 2) 2
371 Little Elephant and Problem Categories Codeforces Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2) 2
372 Towers Categories Codeforces Codeforces Round #274 (Div. 2) 2
373 Little Robber Girl's Zoo Categories Codeforces Codeforces Round #359 (Div. 2) 2
374 K-special Tables Categories Codeforces Codeforces Round #342 (Div. 2) 2
375 Squares Categories Codeforces Codeforces Round #161 (Div. 2) 2
376 Prizes, Prizes, more Prizes Categories Codeforces Codeforces Round #130 (Div. 2) 2
377 Squats Categories Codeforces Codeforces Round #242 (Div. 2) 2
378 New Year and Domino Categories Codeforces Good Bye 2015 2
379 Sagheer and Crossroads Categories Codeforces Codeforces Round #417 (Div. 2) 2
380 Painting Pebbles Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 2
381 Rebranding Categories Codeforces Codeforces Round #327 (Div. 2) 2
382 Vasya and Digital Root Categories Codeforces Codeforces Round #206 (Div. 2) 2
383 DZY Loves Hash Categories Codeforces Codeforces Round #255 (Div. 2) 2
384 Lucky Substring Categories Codeforces Codeforces Beta Round #91 (Div. 2 Only) 2
385 Bear and Three Balls Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 2
386 Flag Categories Codeforces Codeforces Beta Round #16 (Div. 2 Only) 2
387 Line to Cashier Categories Codeforces Codeforces Round #239 (Div. 2) 2
388 Straight <<A>> Categories Codeforces Codeforces Round #415 (Div. 2) 2
389 Good Number Categories Codeforces Codeforces Round #213 (Div. 2) 2
390 Case of Matryoshkas Categories Codeforces Codeforces Round #310 (Div. 1) & Codeforces Round #310 (Div. 2) 2
391 Anya and Smartphone Categories Codeforces Codeforces Round #293 (Div. 2) 2
392 Adding Digits Categories Codeforces Codeforces Round #158 (Div. 2) 2
393 Chat Servers Outgoing Traffic Categories Codeforces Codeforces Beta Round #5 2
394 Mishka and trip Categories Codeforces Codeforces Round #365 (Div. 2) 2
395 Digital Counter Categories Codeforces Codeforces Round #282 (Div. 2) 2
396 Little Elephant and Function Categories Codeforces Codeforces Round #136 (Div. 2) 2
397 Slime Combining Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 2
398 The Festive Evening Categories Codeforces Codeforces Round #426 (Div. 2) 2
399 Meta-Loopless Sorts Categories UVA 2
400 Magic Spheres Categories Codeforces Codeforces Round #335 (Div. 2) 2
401 Amr and The Large Array Categories Codeforces Codeforces Round #312 (Div. 2) 2
402 Polo the Penguin and Matrix Categories Codeforces Codeforces Round #177 (Div. 2) 2
403 Eevee Categories Codeforces MemSQL Start[c]UP 2.0 - Round 1 2
404 Find Marble Categories Codeforces Codeforces Round #175 (Div. 2) 2
405 New Year Book Reading Categories Codeforces Good Bye 2014 2
406 Hexadecimal's Numbers Categories Codeforces Codeforces Beta Round #9 (Div. 2 Only) 2
407 Big Segment Categories Codeforces Codeforces Round #149 (Div. 2) 2
408 PawnChess Categories Codeforces Codeforces Round #328 (Div. 2) 2
409 Soroban Categories Codeforces Codeforces Round #211 (Div. 2) 2
410 Infinite Sequence Categories Codeforces Educational Codeforces Round 7 2
411 Opposites Attract Categories Codeforces Codeforces Beta Round #95 (Div. 2) 2
412 The Fibonacci Segment Categories Codeforces Codeforces Round #213 (Div. 2) 2
413 The Child and Toy Categories Codeforces Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) 2
414 Ilya and tic-tac-toe game Categories Codeforces Codeforces Round #390 (Div. 2) 2
415 Mister B and Book Reading Categories Codeforces Codeforces Round #421 (Div. 2) 2
416 Table Categories Codeforces Codeforces Round #209 (Div. 2) 2
417 Ciel and Dancing Categories Codeforces Codeforces Round #190 (Div. 2) 2
418 Airport Categories Codeforces Codeforces Round #134 (Div. 2) 2
419 Strongly Connected City Categories Codeforces Bayan 2015 Contest Warm Up 2
420 Bear and Strings Categories Codeforces Codeforces Round #226 (Div. 2) 2
421 Wizards and Demonstration Categories Codeforces Codeforces Round #114 (Div. 2) 2
422 Guess Your Way Out! Categories Codeforces Codeforces Round #287 (Div. 2) 3
423 Bicycle Race Categories Codeforces Codeforces Round #346 (Div. 2) 3
424 Spongebob and Joke Categories Codeforces Codeforces Round #332 (Div. 2) 3
425 Garland Categories Codeforces Codeforces Round #239 (Div. 2) 3
426 Letter Categories Codeforces Codeforces Beta Round #14 (Div. 2) 3
427 Little Girl and Maximum XOR Categories Codeforces Codeforces Round #169 (Div. 2) 3
428 Queue Categories Codeforces Codeforces Round #279 (Div. 2) 3
429 XOR and OR Categories Codeforces Codeforces Round #173 (Div. 2) 3
430 Secret Combination Categories Codeforces Codeforces Round #283 (Div. 2) 3
431 Code Parsing Categories Codeforces Codeforces Round #156 (Div. 2) 3
432 Little Elephant and Numbers Categories Codeforces Codeforces Round #136 (Div. 2) 3
433 Constellation Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 3
434 Petya and Java Categories Codeforces Codeforces Beta Round #61 (Div. 2) 3
435 The Text Splitting Categories Codeforces Educational Codeforces Round 4 3
436 Powerful array Categories Codeforces Yandex.Algorithm 2011 Round 2 3
437 Little Xor Categories Codeforces Codeforces Round #153 (Div. 2) 3
438 Gargari and Bishops Categories Codeforces Codeforces Round #264 (Div. 2) 3
439 Maximum Absurdity Categories Codeforces Codeforces Round #193 (Div. 2) 3
440 Hongcow Solves A Puzzle Categories Codeforces Codeforces Round #385 (Div. 2) 3
441 Funky Numbers Categories Codeforces Codeforces Round #121 (Div. 2) 3
442 Plug-in Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 3
443 K-Periodic Array Categories Codeforces Codeforces Round #218 (Div. 2) 3
444 School Marks Categories Codeforces Codeforces Round #301 (Div. 2) 3
445 Valera and Fruits Categories Codeforces Codeforces Round #252 (Div. 2) 3
446 Sereja and Contests Categories Codeforces Codeforces Round #235 (Div. 2) 3
447 Room Leader Categories Codeforces Codeforces Beta Round #68 3
448 Dima and Guards Categories Codeforces Codeforces Round #214 (Div. 2) 3
449 Ilya and Matrix Categories Codeforces Codeforces Round #186 (Div. 2) 3
450 Primes or Palindromes? Categories Codeforces Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2) 3
451 Eugeny and Play List Categories Codeforces Codeforces Round #182 (Div. 2) 3
452 Cows and Primitive Roots Categories Codeforces Codeforces Round #174 (Div. 2) 3
453 Bear and Prime Numbers Categories Codeforces Codeforces Round #226 (Div. 2) 3
454 Pyramid of Glasses Categories Codeforces Codeforces Round #354 (Div. 2) 3
455 LLPS Categories Codeforces Codeforces Round #127 (Div. 2) 3
456 Co-prime Array Categories Codeforces Educational Codeforces Round 11 3
457 Sereja and Stairs Categories Codeforces Codeforces Round #223 (Div. 2) 3
458 Worms Evolution Categories Codeforces Codeforces Beta Round #31 (Div. 2, Codeforces format) 3
459 Replacement Categories Codeforces Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2) 3
460 A + B Strikes Back Categories Codeforces April Fools Day Contest 2014 3
461 Testing Pants for Sadness Categories Codeforces Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only) 3
462 Cows and Sequence Categories Codeforces Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) 3
463 Tennis Tournament Categories Codeforces Educational Codeforces Round 8 3
464 Petya and Exam Categories Codeforces Codeforces Round #425 (Div. 2) 3
465 Phone Numbers Categories Codeforces Codeforces Round #107 (Div. 2) 3
466 HDD is Outdated Technology Categories Codeforces Educational Codeforces Round 4 3
467 Playing Cubes Categories Codeforces Codeforces Round #159 (Div. 2) 3
468 Tic-tac-toe Categories Codeforces Codeforces Beta Round #3 3
469 Card Game Categories Codeforces Codeforces Beta Round #82 (Div. 2) 3
470 Dividing Orange Categories Codeforces Codeforces Round #150 (Div. 2) 3
471 Two Problems Categories Codeforces Codeforces Round #128 (Div. 2) 3
472 Bear and Reverse Radewoosh Categories Codeforces VK Cup 2016 - Round 1 (Div. 2 Edition) 3
473 Mike and Cellphone Categories Codeforces Codeforces Round #361 (Div. 2) 3
474 Not Equal on a Segment Categories Codeforces Educational Codeforces Round 7 3
475 Finding Team Member Categories Codeforces Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] 3
476 Triangle Categories Codeforces Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) 3
477 Dima and To-do List Categories Codeforces Codeforces Round #214 (Div. 2) 3
478 Letter Categories Codeforces Codeforces Beta Round #42 (Div. 2) 3
479 Super Agent Categories Codeforces Codeforces Beta Round #12 (Div 2 Only) 3
480 Stripe Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 3
481 Guest From the Past Categories Codeforces Codeforces Round #342 (Div. 2) 3
482 Vasya and Public Transport Categories Codeforces Codeforces Round #206 (Div. 2) 3
483 Music Categories Codeforces Codeforces Round #315 (Div. 2) 3
484 Lucky Permutation Triple Categories Codeforces Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2) 3
485 Sereja and Array Categories Codeforces Codeforces Round #187 (Div. 2) 3
486 President's Office Categories Codeforces Codeforces Beta Round #6 (Div. 2 Only) 3
487 Point on Spiral Categories Codeforces Codeforces Round #171 (Div. 2) 3
488 Can you play carrom !!! Categories SPOJ 3
489 Guess a number! Categories Codeforces Codeforces Round #241 (Div. 2) 3
490 Seating On Bus Categories Codeforces Educational Codeforces Round 11 3
491 Masha and geometric depression Categories Codeforces Codeforces Round #407 (Div. 2) 3
492 Valera and Contest Categories Codeforces Codeforces Round #216 (Div. 2) 3
493 Cleaner Robot Categories Codeforces 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) 3
494 Sleuth Categories Codeforces Codeforces Beta Round #46 (Div. 2) 3
495 Cows and Poker Game Categories Codeforces Codeforces Round #174 (Div. 2) 3
496 Password Check Categories Codeforces Coder-Strike 2014 - Qualification Round 3
497 Cosmic Tables Categories Codeforces Codeforces Round #137 (Div. 2) 3
498 Inna and New Matrix of Candies Categories Codeforces Codeforces Round #234 (Div. 2) 3
499 Flag Day Categories Codeforces Codeforces Round #207 (Div. 2) 3
500 Order Book Categories Codeforces Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) 3
501 Whose sentence is it? Categories Codeforces Codeforces Round #185 (Div. 2) 3
502 Glass Carving Categories Codeforces Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) 3
503 To Add or Not to Add Categories Codeforces Codeforces Round #143 (Div. 2) 3
504 Tiling with Hexagons Categories Codeforces Codeforces Round #133 (Div. 2) 3
505 Vasya and Basketball Categories Codeforces Codeforces Round #281 (Div. 2) 3
506 System Administrator Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 3
507 Exams Categories Codeforces Codeforces Round #122 (Div. 2) 3
508 Long Path Categories Codeforces Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) 3
509 Correct Solution? Categories Codeforces Codeforces Beta Round #12 (Div 2 Only) 3
510 Blackjack Categories Live Archive 2004 North America - Rocky Mountain 3
511 King of Thieves Categories Codeforces ZeptoLab Code Rush 2015 3
512 ZigZag Categories TopCoder TCCC '03 Semifinals 3 - Div1 easy] (4493) 3
513 Snow Footprints Categories Codeforces Codeforces Round #180 (Div. 2) 3
514 Array Categories Codeforces Codeforces Round #138 (Div. 2) 3
515 Watering Flowers Categories Codeforces Codeforces Round #340 (Div. 2) 3
516 Art Union Categories Codeforces Codeforces Round #241 (Div. 2) 3
517 Cloud of Hashtags Categories Codeforces Codeforces Round #401 (Div. 2) 3
518 Arithmetic Progression Categories Codeforces Codeforces Round #224 (Div. 2) 3
519 Bar Categories Codeforces Codeforces Beta Round #52 (Div. 2) 3
520 Polo the Penguin and Segments Categories Codeforces Codeforces Round #177 (Div. 2) 3
521 Network Topology Categories Codeforces Croc Champ 2013 - Round 1 3
522 Heads or Tails Categories Codeforces Codeforces Round #149 (Div. 2) 3
523 Voting for Photos Categories Codeforces VK Cup 2016 - Qualification Round 1 3
524 Haiku Categories Codeforces Codeforces Beta Round #70 (Div. 2) 3
525 Dima and Staircase Categories Codeforces Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1) 3
526 Ladder Categories Codeforces Codeforces Round #171 (Div. 2) 3
527 Unusual Product Categories Codeforces Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) 3
528 Postcards and photos Categories Codeforces Codeforces Beta Round #98 (Div. 2) 3
529 Lucky Sum Categories Codeforces Codeforces Beta Round #91 (Div. 1 Only) & Codeforces Beta Round #91 (Div. 2 Only) 3
530 Football Categories Codeforces RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1) 3
531 Spyke Talks Categories Codeforces Croc Champ 2013 - Qualification Round 3
532 Common Divisors Categories Codeforces Codeforces Round #117 (Div. 2) 3
533 Internet Address Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 3
534 Little Artem and Matrix Categories Codeforces VK Cup 2016 - Round 2 3
535 Karen and Game Categories Codeforces Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) 3
536 Start Up Categories Codeforces Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) 3
537 Load Balancing Categories Codeforces Educational Codeforces Round 3 3
538 Unary Categories Codeforces Codeforces Beta Round #96 (Div. 2) 3
539 Sereja and Algorithm Categories Codeforces Codeforces Round #215 (Div. 1) 3
540 Numbers Categories Codeforces Codeforces Beta Round #13 3
541 The Child and Set Categories Codeforces Codeforces Round #250 (Div. 2) 3
542 Om Nom and Dark Park Categories Codeforces ZeptoLab Code Rush 2015 3
543 Multithreading Categories Codeforces Codeforces Round #165 (Div. 2) 3
544 Long Jumps Categories Codeforces Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1) 3
545 Sockets Categories Codeforces Codeforces Round #159 (Div. 2) 3
546 Dice Tower Categories Codeforces Codeforces Round #139 (Div. 2) 3
547 Phone Code Categories Codeforces Croc Champ 2012 - Qualification Round 3
548 Canvas Frames Categories Codeforces Codeforces Beta Round #93 (Div. 2 Only) 3
549 Booking System Categories Codeforces Codeforces Round #241 (Div. 2) 3
550 Megacity Categories Codeforces Codeforces Round #242 (Div. 2) 3
551 Voting Categories Codeforces Codeforces Round #388 (Div. 2) 3
552 Bombs Categories Codeforces Codeforces Round #203 (Div. 2) 3
553 Easy Number Challenge Categories Codeforces Codeforces Round #146 (Div. 2) 3
554 Down the Hatch! Categories Codeforces Codeforces Round #193 (Div. 2) 3
555 Alyona and Spreadsheet Categories Codeforces Codeforces Round #401 (Div. 2) 3
556 Phone numbers Categories Codeforces Codeforces Beta Round #25 (Div. 2 Only) 3
557 Ternary Logic Categories Codeforces Codeforces Beta Round #97 (Div. 2) 3
558 Easter Eggs Categories Codeforces Codeforces Beta Round #70 (Div. 2) 3
559 Burglar and Matches Categories Codeforces Codeforces Beta Round #16 (Div. 2 Only) 3
560 Vasya's Calendar Categories Codeforces Codeforces Round #117 (Div. 2) 3
561 Gennady the Dentist Categories Codeforces Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2) 3
562 Ball Game Categories Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 3
563 Bayan Bus Categories Codeforces Bayan 2015 Contest Warm Up 3
564 Increasing Sequence Categories Codeforces Codeforces Beta Round #11 3
565 Vanya and Label Categories Codeforces Codeforces Round #355 (Div. 2) 3
566 Command Line Arguments Categories Codeforces Croc Champ 2013 - Qualification Round 4
567 Walking in the Rain Categories Codeforces Codeforces Round #121 (Div. 2) 4
568 Mishap in Club Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 4
569 Little Artem and Dance Categories Codeforces VK Cup 2016 - Round 2 4
570 Game of the Rows Categories Codeforces Codeforces Round #428 (Div. 2) 4
571 Regular Bridge Categories Codeforces Codeforces Round #306 (Div. 2) 4
572 Troops of Sand Monsters Categories SPOJ 4
573 Riding in a Lift Categories Codeforces Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1) 4
574 Weather Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) 4
575 Marathon Categories Codeforces Codeforces Round #237 (Div. 2) 4
576 Secret Categories Codeforces Codeforces Round #166 (Div. 2) 4
577 Progress Bar Categories Codeforces Codeforces Beta Round #65 (Div. 2) 4
578 Testing Robots Categories Codeforces Codeforces Round #335 (Div. 2) 4
579 Jeff and Rounding Categories Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 4
580 Quiz League Categories Codeforces School Regional Team Contest, Saratov, 2011 4
581 Mysterious strings Categories Codeforces April Fools Day Contest 2013 4
582 Fruits Categories Codeforces Codeforces Beta Round #12 (Div 2 Only) 4
583 Anagram Search Categories Codeforces Codeforces Round #103 (Div. 2) 4
584 Poster Categories Codeforces Coder-Strike 2014 - Round 1 4
585 Semifinals Categories Codeforces Codeforces Round #222 (Div. 2) 4
586 Turing Tape Categories Codeforces Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2) 4
587 Find Maximum Categories Codeforces Codeforces Round #205 (Div. 2) 4
588 Shell Game Categories Codeforces Codeforces Beta Round #35 (Div. 2) 4
589 About Bacteria Categories Codeforces Codeforces Round #125 (Div. 1) & Codeforces Round #125 (Div. 2) 4
590 Extract Numbers Categories Codeforces Educational Codeforces Round 2 4
591 Vladik and Memorable Trip Categories Codeforces Codeforces Round #416 (Div. 2) 4
592 Where Are My Flakes? Categories Codeforces Codeforces Beta Round #56 4
593 Young Photographer Categories Codeforces Codeforces Beta Round #14 (Div. 2) 4
594 Tennis Game Categories Codeforces Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1) 4
595 Island Puzzle Categories Codeforces 8VC Venture Cup 2016 - Final Round (Div. 1 Edition) & 8VC Venture Cup 2016 - Final Round (Div. 2 Edition) 4
596 Running Student Categories Codeforces Codeforces Beta Round #9 (Div. 2 Only) 4
597 Devu and Partitioning of the Array Categories Codeforces Codeforces Round #251 (Div. 2) 4
598 Three Logos Categories Codeforces Codeforces Round #322 (Div. 2) 4
599 The Closest Pair Categories Codeforces Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) 4
600 Road Map Categories Codeforces Codeforces Beta Round #34 (Div. 2) 4
601 Sereja and Mirroring Categories Codeforces Codeforces Round #243 (Div. 2) 4
602 Settlers' Training Categories Codeforces Codeforces Beta Round #59 (Div. 2) 4
603 Winnie-the-Pooh and honey Categories Codeforces School Regional Team Contest, Saratov, 2011 4
604 Xenia and Spies Categories Codeforces Codeforces Round #199 (Div. 2) 4
605 Pattern Categories Codeforces Coder-Strike 2014 - Round 1 4
606 Vessels Categories Codeforces Codeforces Round #218 (Div. 2) 4
607 123-sequence Categories Codeforces Codeforces Testing Round #1 4
608 Cardiogram Categories Codeforces Codeforces Round #249 (Div. 2) 4
609 Special Offer! Super Price 999 Bourles! Categories Codeforces Codeforces Round #135 (Div. 2) 4
610 Forming Teams Categories Codeforces Codeforces Round #133 (Div. 2) 4
611 Amity Assessment Categories Codeforces CROC 2016 - Elimination Round 4
612 Escape Categories Codeforces Codeforces Round #105 (Div. 2) 4
613 Pasha and Hamsters Categories Codeforces Coder-Strike 2014 - Finals (online edition, Div. 2) 4
614 Friends or Not Categories Codeforces VK Cup 2012 Qualification Round 2 4
615 Gabriel and Caterpillar Categories Codeforces Educational Codeforces Round 10 4
616 Help Kingdom of Far Far Away 2 Categories Codeforces Codeforces Round #102 (Div. 2) 4
617 Maximum Submatrix 2 Categories Codeforces Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2) 4
618 Reberland Linguistics Categories Codeforces Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2) 4
619 Orchestra Categories Codeforces 8VC Venture Cup 2016 - Final Round (Div. 2 Edition) & 8VC Venture Cup 2016 - Final Round (Div. 1 Edition) 4
620 Psychos in a Line Categories Codeforces Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2) 4
621 Power Consumption Calculation Categories Codeforces Codeforces Beta Round #10 4
622 Dima and Sequence Categories Codeforces Codeforces Round #167 (Div. 2) 4
623 Magic Box Categories Codeforces Codeforces Round #143 (Div. 2) 4
624 Forgotten Episode Categories Codeforces Testing Round #10 4
625 Matrix Categories Codeforces Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2) 4
626 Multitasking Categories Codeforces Codeforces Round #225 (Div. 2) 4
627 A Lot of Games Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 4
628 Autocomplete Categories Codeforces Codeforces Beta Round #49 (Div. 2) 4
629 Steps Categories Codeforces Codeforces Round #108 (Div. 2) 4
630 Choosing Laptop Categories Codeforces Codeforces Beta Round #82 (Div. 2) 4
631 Coins Categories Codeforces Codeforces Beta Round #44 (Div. 2) 4
632 Om Nom and Spiders Categories Codeforces Zepto Code Rush 2014 4
633 African Crossword Categories Codeforces Codeforces Beta Round #74 (Div. 2 Only) 4
634 Good Matrix Elements Categories Codeforces ABBYY Cup 2.0 - Easy 4
635 Chilly Willy Categories Codeforces Codeforces Round #152 (Div. 2) 4
636 Find Pair Categories Codeforces Codeforces Round #111 (Div. 2) 4
637 Petya and Square Categories Codeforces Codeforces Beta Round #85 (Div. 2 Only) 4
638 ZgukistringZ Categories Codeforces Codeforces Round #307 (Div. 2) 4
639 Predict Outcome of the Game Categories Codeforces Codeforces Round #258 (Div. 2) 4
640 Weird Chess Categories Codeforces Codeforces Round #300 4
641 Inna and Huge Candy Matrix Categories Codeforces Codeforces Round #234 (Div. 2) 4
642 Array Division Categories Codeforces Educational Codeforces Round 21 4
643 Clique Problem Categories Codeforces Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) 4
644 Ciel and Robot Categories Codeforces Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) 4
645 Chord Categories Codeforces Codeforces Beta Round #73 (Div. 2 Only) 4
646 Rotate, Flip and Zoom Categories Codeforces VK Cup 2015 - Qualification Round 2 4
647 Mountain Scenery Categories Codeforces Codeforces Round #134 (Div. 2) 4
648 Magic, Wizardry and Wonders Categories Codeforces Codeforces Round #143 (Div. 2) 4
649 Page Numbers Categories Codeforces Codeforces Beta Round #34 (Div. 2) 4
650 After Training Categories Codeforces Codeforces Round #123 (Div. 2) 4
651 Lucky Mask Categories Codeforces Codeforces Round #104 (Div. 2) 4
652 Fortune Telling Categories Codeforces Codeforces Beta Round #55 (Div. 2) 4
653 Email Aliases Categories Codeforces 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) 4
654 BerOS file system Categories Codeforces Codeforces Alpha Round #20 (Codeforces format) 4
655 Drazil and Tiles Categories Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 4
656 Lefthanders and Righthanders Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) 4
657 Indian Summer Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 4
658 Good Matrix Elements Categories Codeforces ABBYY Cup 2.0 - Easy 4
659 Elevator Categories Codeforces School Regional Team Contest, Saratov, 2011 4
660 I.O.U. Categories Codeforces Codeforces Round #221 (Div. 2) 4
661 Vanya and Computer Game Categories Codeforces Codeforces Round #280 (Div. 2) 4
662 Tourist Problem Categories Codeforces Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) 4
663 Promocodes with Mistakes Categories Codeforces VK Cup 2016 - Qualification Round 1 4
664 Meeting Categories Codeforces Codeforces Round #103 (Div. 2) 4
665 Two Tables Categories Codeforces Codeforces Round #141 (Div. 2) 4
666 Irrational problem Categories Codeforces Codeforces Beta Round #62 4
667 Cracking the Code Categories Codeforces Experimental Educational Round: VolBIT Formulas Blitz 4
668 Toy Sum Categories Codeforces Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) 4
669 Ancient Prophesy Categories Codeforces Codeforces Round #158 (Div. 2) 4
670 Center Alignment Categories Codeforces Codeforces Beta Round #5 4
671 Bitwise Formula Categories Codeforces Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2) 5
672 Punctuation Categories Codeforces Codeforces Testing Round #4 5
673 Average Numbers Categories Codeforces Codeforces Testing Round #3 5
674 Boulevard Categories Codeforces 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) 5
675 Inna and Dima Categories Codeforces Codeforces Round #220 (Div. 2) 5
676 Rock-paper-scissors Categories Codeforces School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) 5
677 Domino Categories Codeforces Yandex.Algorithm 2011 Round 1 5
678 Frames Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only) 5
679 Obsession with Robots Categories Codeforces Codeforces Beta Round #8 5
680 Pseudorandom Sequence Period Categories Codeforces Croc Champ 2012 - Qualification Round 5
681 Pages Categories Codeforces Codeforces Round #233 (Div. 2) 5
682 Fox and Minimal path Categories Codeforces Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2) 5
683 Square Earth? Categories Codeforces Codeforces Beta Round #53 5
684 Scrambled Categories Codeforces April Fools Day Contest 2016 5
685 Literature Lesson Categories Codeforces Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2) 5
686 T-shirts from Sponsor Categories Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 5
687 Counting Sticks Categories Codeforces Codeforces Round #231 (Div. 2) 5
688 Prime Permutation Categories Codeforces Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only) 5
689 Bets Categories Codeforces Codeforces Beta Round #63 (Div. 2) 5
690 Levko and Array Recovery Categories Codeforces Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2) 5
691 Statistics of Recompressing Videos Categories Codeforces VK Cup 2015 - Qualification Round 2 5
692 Balls and Boxes Categories Codeforces Codeforces Round #158 (Div. 2) 5
693 Jury Size Categories Codeforces Codeforces Round #155 (Div. 2) 5
694 Network Mask Categories Codeforces Croc Champ 2013 - Qualification Round 5
695 Vasily the Bear and Sequence Categories Codeforces Codeforces Round #195 (Div. 2) 5
696 Polo the Penguin and XOR operation Categories Codeforces Codeforces Round #177 (Div. 1) & Codeforces Round #177 (Div. 2) 5
697 Help General Categories Codeforces Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) 5
698 Help Chef Gerasim Categories Codeforces Codeforces Beta Round #78 (Div. 2 Only) 5
699 On the Road to LCPC Categories A2 Online Judge 5
700 Lengthening Sticks Categories Codeforces Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) 5
701 Find Color Categories Codeforces Codeforces Beta Round #39 5
702 QR code Categories Codeforces April Fools Day Contest 2013 5
703 Elimination Categories Codeforces RCC 2014 Warmup (Div. 2) 5
704 Cutting Figure Categories Codeforces Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2) 5
705 Sequence Formatting Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 5
706 Persistent Bookcase Categories Codeforces Codeforces Round #368 (Div. 2) 5
707 Four Segments Categories Codeforces Codeforces Beta Round #14 (Div. 2) 5
708 Sereja and Contest Categories Codeforces Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2) 5
709 Convex Shape Categories Codeforces Codeforces Round #168 (Div. 2) 5
710 Permutations Categories Codeforces Codeforces Beta Round #92 (Div. 2 Only) 5
711 Second-Price Auction Categories Codeforces Testing Round #9 5
712 Flea travel Categories Codeforces Codeforces Beta Round #51 5
713 SMSC Categories Codeforces Croc Champ 2013 - Round 1 5
714 Cottage Village Categories Codeforces Codeforces Beta Round #15 5
715 Domino Categories Live Archive 2006 Asia - Hanoi 5
716 Series of Crimes Categories Codeforces Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition) 5
717 Kyoya and Permutation Categories Codeforces Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) 5
718 Inna and Alarm Clock Categories Codeforces Codeforces Round #229 (Div. 2) 5
719 What is for dinner? Categories Codeforces Codeforces Beta Round #33 (Codeforces format) 5
720 Young Table Categories Codeforces Codeforces Round #147 (Div. 2) 5
721 Orange Categories Codeforces April Fools Day Contest 2013 5
722 Rock-Paper-Scissors Categories Codeforces Croc Champ 2012 - Round 1 5
723 Game on Paper Categories Codeforces Codeforces Round #128 (Div. 2) 5
724 Haar Features Categories Codeforces Looksery Cup 2015 5
725 Colorful Field Categories Codeforces Codeforces Beta Round #71 5
726 Spy Syndrome 2 Categories Codeforces Manthan, Codefest 16 5
727 Facetook Priority Wall Categories Codeforces Codeforces Beta Round #67 (Div. 2) 5
728 Making Sequences is Fun Categories Codeforces Codeforces Round #219 (Div. 2) 5
729 World Football Cup Categories Codeforces Codeforces Beta Round #19 5
730 Nearest Fraction Categories Codeforces Codeforces Round #172 (Div. 2) 5
731 Subsegments Categories Codeforces Codeforces Beta Round #63 (Div. 2) 5
732 Memory Manager Categories Codeforces Codeforces Beta Round #7 5
733 Xenia and Hamming Categories Codeforces Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2) 5
734 Cards Sorting Categories Codeforces Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals) 5
735 Extra-terrestrial Intelligence Categories Codeforces Codeforces Beta Round #36 5
736 Bracket Sequence Categories Codeforces Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2) 5
737 Mike and Frog Categories Codeforces Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2) 5
738 Bombing Categories SPOJ 5
739 Berland Bingo Categories Codeforces Codeforces Round #217 (Div. 2) 5
740 Ryouko's Memory Note Categories Codeforces Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) 5
741 Balancer Categories Codeforces Testing Round #10 5
742 Email address Categories Codeforces Codeforces Beta Round #40 (Div. 2) 5
743 Friends Categories Codeforces Codeforces Beta Round #76 (Div. 2 Only) 5
744 Codecraft III Categories Codeforces School Team Contest #3 (Winter Computer School 2010/11) 5
745 Theseus and labyrinth Categories Codeforces Codeforces Round #354 (Div. 2) 5
746 Wizards and Trolleybuses Categories Codeforces Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2) 5
747 Elevator Categories Codeforces Codeforces Beta Round #88 5
748 Ksusha the Squirrel Categories Codeforces Croc Champ 2013 - Round 2 (Div. 2 Edition) 5
749 Mail Stamps Categories Codeforces Codeforces Beta Round #29 (Div. 2, Codeforces format) 5
750 Data Recovery Categories Codeforces Coder-Strike 2014 - Round 2 5
751 Sets Categories Codeforces Yandex.Algorithm 2011 Qualification 2 5
752 Suspects Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 5
753 Fibonacci-ish Categories Codeforces Manthan, Codefest 16 5
754 Inna and Pink Pony Categories Codeforces Codeforces Round #220 (Div. 2) 5
755 Borya and Hanabi Categories Codeforces Codeforces Round #253 (Div. 1) & Codeforces Round #253 (Div. 2) 5
756 Calendar Categories Codeforces Codeforces Round #183 (Div. 2) 5
757 Buses Between Cities Categories Codeforces Educational Codeforces Round 12 5
758 Martian Clock Categories Codeforces Codeforces Round #106 (Div. 2) 5
759 Spoilt Permutation Categories Codeforces Codeforces Beta Round #52 (Div. 2) 5
760 Grammar Lessons Categories Codeforces Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) 5
761 George and Number Categories Codeforces Codeforces Round #227 (Div. 2) 5
762 Sums of Digits Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 5
763 Maximum Xor Secondary Categories Codeforces Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2) 5
764 Robot Bicorn Attack Categories Codeforces Codeforces Round #115 5
765 Guilty --- to the kitchen! Categories Codeforces Codeforces Beta Round #41 5
766 Board Game Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 5
767 Square and Rectangles Categories Codeforces MemSQL start[c]up Round 1 5
768 Two Heaps Categories Codeforces Codeforces Round #205 (Div. 2) 5
769 Chess Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 5
770 Spyke Chatting Categories Codeforces Coder-Strike 2014 - Round 2 6
771 Presents Categories Codeforces Codeforces Beta Round #50 6
772 Points Categories Codeforces All-Ukrainian School Olympiad in Informatics 6
773 FLING1 Categories SPOJ 6
774 Spelling Check Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 6
775 Candies Categories Codeforces Testing Round #6 6
776 Cola Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 6
777 Ants Categories Codeforces Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2) 6
778 Restoring IPv6 Categories Codeforces CROC-MBTU 2012, Final Round (Online version, Div. 2) 6
779 CUBE ROOT Categories SPOJ 6
780 Mike and Geometry Problem Categories Codeforces Codeforces Round #361 (Div. 2) 6
781 Game on Tree Categories Codeforces Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2) 6
782 Plane of Tanks: Pro Categories Codeforces Codeforces Round #115 6
783 Infinite Inversions Categories Codeforces Codeforces Round #301 (Div. 2) 6
784 Wizards and Minimal Spell Categories Codeforces Codeforces Round #114 (Div. 2) 6
785 Easy Tape Programming Categories Codeforces Codeforces Round #148 (Div. 2) 6
786 Mister B and PR Shifts Categories Codeforces Codeforces Round #421 (Div. 1) & Codeforces Round #421 (Div. 2) 6
787 Brackets in Implications Categories Codeforces Codeforces Round #306 (Div. 2) 6
788 The Maths Lecture Categories Codeforces Codeforces Round #287 (Div. 2) 6
789 Heroes Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only) 6
790 Land Lot Categories Codeforces School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) 6
791 Restoring Increasing Sequence Categories Codeforces Codeforces Round #279 (Div. 2) 6
792 Cinema Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) 6
793 Minesweeper 1D Categories Codeforces Codeforces Round #237 (Div. 2) 6
794 Sum of Medians Categories Codeforces Yandex.Algorithm 2011 Round 1 6
795 Mr. Bender and Square Categories Codeforces Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) 6
796 Holidays Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 6
797 Bus Categories Codeforces Croc Champ 2012 - Qualification Round 6
798 Mathematical Analysis Rocks! Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 6
799 Vanya and Brackets Categories Codeforces Codeforces Round #308 (Div. 2) 6
800 PLAHTE Categories SPOJ 6
801 Cubes Categories Codeforces Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1) 6
802 Permutation Sum Categories Codeforces Codeforces Round #175 (Div. 2) 6
803 WTF? Categories Codeforces April Fools Day Contest 2013 6
804 Bear and Polynomials Categories Codeforces VK Cup 2016 - Round 1 6
805 ????????, ?? ?????? ???? ?????? Categories Codeforces VK Cup 2015 - Round 1 6
806 Reducing Fractions Categories Codeforces Codeforces Round #137 (Div. 2) 6
807 Harry Potter and Three Spells Categories Codeforces Codeforces Beta Round #60 6
808 Schedule Categories Codeforces Codeforces Beta Round #31 (Div. 2, Codeforces format) 6
809 Up the hill Categories Codeforces Testing Round #11 6
810 F1 Champions Categories Codeforces Codeforces Beta Round #24 6
811 Bulls and Cows Categories Codeforces Codeforces Beta Round #59 (Div. 2) 6
812 Dima and Containers Categories Codeforces Codeforces Round #208 (Div. 2) 6
813 Playing with Permutations Categories Codeforces Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2) 6
814 Crash Categories Codeforces RCC 2014 Warmup (Div. 2) 6
815 Traffic Lights Categories Codeforces Codeforces Beta Round #29 (Div. 2, Codeforces format) 6
816 Divisors Categories Codeforces Codeforces Round #256 (Div. 2) 6
817 Rooter's Song Categories Codeforces Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2) 6
818 Characteristics of Rectangles Categories Codeforces Codeforces Round #194 (Div. 1) 6
819 Wallpaper Categories Codeforces Codeforces Beta Round #99 (Div. 2) 6
820 Rectangle Puzzle II Categories Codeforces Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2) 6
821 Fly, freebies, fly! Categories Codeforces Testing Round #9 6
822 Harry Potter and the History of Magic Categories Codeforces Codeforces Beta Round #60 6
823 Simple XML Categories Codeforces Codeforces Testing Round #2 6
824 Appleman and a Sheet of Paper Categories Codeforces Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2) 6
825 International Olympiad Categories Codeforces CROC 2016 - Final Round [Private, For Onsite Finalists Only] 6
826 Tyndex.Brome Categories Codeforces Codeforces Beta Round #58 6
827 Transmigration Categories Codeforces Codeforces Beta Round #81 6
828 Practice Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) 6
829 Multi-core Processor Categories Codeforces Coder-Strike 2014 - Qualification Round 6
830 Cinema Cashier Categories Codeforces Codeforces Beta Round #10 6
831 File List Categories Codeforces VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) 6
832 Partial Teacher Categories Codeforces Manthan 2011 6
833 Main Sequence Categories Codeforces Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2) 6
834 Hit Ball Categories Codeforces Codeforces Round #128 (Div. 2) 6
835 Chris and Road Categories Codeforces Codeforces Round #365 (Div. 2) 6
836 New Year Cards Categories Codeforces Codeforces Round #100 6
837 Oh Sweet Beaverette Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 6
838 Insertion Sort Categories Codeforces Codeforces Round #212 (Div. 2) 6
839 Multiplication Table Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 6
840 Polygon Categories A2 Online Judge 6
841 Compartments Categories Codeforces Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2) 6
842 Cheaterius's Problem Categories Codeforces Codeforces Beta Round #48 6
843 Washer, Dryer, Folder Categories Codeforces MemSQL Start[c]UP 2.0 - Round 1 6
844 Bear and Up-Down Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 6
845 Hockey Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only) 6
846 Keyboard Categories Codeforces Codeforces Beta Round #73 (Div. 2 Only) 6
847 Police Patrol Categories Codeforces Codeforces Round #244 (Div. 2) 6
848 Try and Catch Categories Codeforces Codeforces Round #123 (Div. 2) 7
849 Biathlon Categories Codeforces Codeforces Beta Round #72 (Div. 2 Only) 7
850 Online Meeting Categories Codeforces Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) 7
851 Codeforces World Finals Categories Codeforces Codeforces Beta Round #30 (Codeforces format) 7
852 Shave Beaver! Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 7
853 Jabber ID Categories Codeforces Codeforces Alpha Round #21 (Codeforces format) 7
854 Transmitting Levels Categories Codeforces ZeptoLab Code Rush 2015 7
855 Snake Categories Codeforces Codeforces Round #139 (Div. 2) 7
856 Constellation Categories Codeforces Codeforces Beta Round #32 (Div. 2, Codeforces format) 7
857 Guess Your Way Out! II Categories Codeforces Codeforces Round #312 (Div. 2) 7
858 Population Size Categories Codeforces Codeforces Round #241 (Div. 2) 7
859 Logging Categories Codeforces Codeforces Beta Round #16 (Div. 2 Only) 7
860 Bear and Square Grid Categories Codeforces Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) 7
861 Game of chess unfinished Categories Codeforces Codeforces Beta Round #41 7
862 Follow Traffic Rules Categories Codeforces Codeforces Beta Round #5 7
863 Log Stream Analysis Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 7
864 Little Artem and Random Variable Categories Codeforces VK Cup 2016 - Round 2 7
865 Bug in Code Categories Codeforces Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) 7
866 Intersection Categories Codeforces Codeforces Alpha Round #21 (Codeforces format) 7
867 THE N WITTY FRIENDS Categories SPOJ 7
868 Hexagonal numbers Categories Codeforces Unknown Language Round #4 7
869 Vasya and Types Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only) 7
870 Martian Architecture Categories Codeforces Codeforces Beta Round #53 7
871 Bender Problem Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 7
872 Teams Formation Categories Codeforces Codeforces Round #443 (Div. 1) & Codeforces Round #443 (Div. 2) 7
873 Geometry Horse Categories Codeforces Codeforces Round #115 7
874 Parking Lot Categories Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 7
875 IQ Test Categories Codeforces Testing Round #8 7
876 Pacifist frogs Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 7
877 HTML Categories Timus 7
878 Sum of Remainders Categories Codeforces Educational Codeforces Round 5 7
879 Warehouse Categories Codeforces Codeforces Beta Round #35 (Div. 2) 7
880 Champions' League Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) 7
881 Petya and File System Categories Codeforces Codeforces Beta Round #61 (Div. 2) 7
882 Furlo and Rublo and Game Categories Codeforces Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) 7
883 Boom Categories Codeforces School Regional Team Contest, Saratov, 2011 7
884 Computer Game Categories Codeforces Codeforces Beta Round #37 7
885 Shifting Categories Codeforces Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2) 7
886 E-mail Addresses Categories Codeforces Coder-Strike 2014 - Round 1 7
887 Vladik and chat Categories Codeforces Codeforces Round #390 (Div. 2) 7
888 Valera and Swaps Categories Codeforces Codeforces Round #252 (Div. 2) 7
889 Journey Categories Codeforces Codeforces Beta Round #42 (Div. 2) 7
890 Crunching Numbers Just for You Categories Codeforces April Fools Contest 2017 7
891 On Corruption and Numbers Categories Codeforces Codeforces Round #232 (Div. 2) 7
892 Chocolate Categories Codeforces Codeforces Beta Round #31 (Div. 2, Codeforces format) 7
893 Before Exam Categories Codeforces Codeforces Beta Round #90 7
894 Game Categories Codeforces Codeforces Beta Round #46 (Div. 2) 7
895 Sequence of points Categories Codeforces Codeforces Beta Round #24 7
896 Football Championship Categories Codeforces Codeforces Round #126 (Div. 2) 7
897 Inna, Dima and Song Categories Codeforces Codeforces Round #229 (Div. 2) 7
898 Blog Photo Categories Codeforces Codeforces Beta Round #49 (Div. 2) 7
899 Treasure Island Categories Codeforces Codeforces Beta Round #82 (Div. 2) 7
900 Curious Array Categories Codeforces Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) 7
901 Big Maximum Sum Categories Codeforces Codeforces Beta Round #67 (Div. 2) 7
902 Help Victoria the Wise Categories Codeforces Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only) 7
903 Cards Categories Codeforces Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2) 7
904 Circle of Numbers Categories Codeforces Codeforces Round #161 (Div. 2) 7
905 Ksenia and Pawns Categories Codeforces Codeforces Round #224 (Div. 2) 7
906 Pentagonal numbers Categories Codeforces VK Cup 2012 Wild-card Round 1 7
907 Fractal Categories Codeforces Codeforces Beta Round #36 7
908 Corporation Mail Categories Codeforces Codeforces Beta Round #52 (Div. 2) 7
909 ucyhf Categories Codeforces April Fools Day Contest 7
910 Kicker Categories Codeforces Coder-Strike 2014 - Qualification Round 7
911 Programming Language Categories Codeforces Codeforces Round #126 (Div. 2) 7
912 Working routine Categories Codeforces Codeforces Round #367 (Div. 2) 7
913 Nanami's Digital Board Categories Codeforces Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) 7
914 Last Chance Categories Codeforces Codeforces Beta Round #98 (Div. 2) 7
915 Case of a Top Secret Categories Codeforces Codeforces Round #310 (Div. 1) 7
916 Genetic Engineering Categories Codeforces Rockethon 2014 7
917 Arthur and Questions Categories Codeforces Codeforces Round #293 (Div. 2) 7
918 Mean Requests Categories Codeforces VK Cup 2015 - Qualification Round 2 7
919 Blog Categories Timus 7
920 Hexagons Categories Codeforces Codeforces Round #338 (Div. 2) 7
921 Collisions Categories Codeforces Codeforces Beta Round #34 (Div. 2) 8
922 Little Elephant and Strings Categories Codeforces Codeforces Round #129 (Div. 1) 8
923 Team Arrangement Categories Codeforces Codeforces Beta Round #55 (Div. 2) 8
924 Defragmentation Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 8
925 Volcanoes Categories Codeforces Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2) 8
926 Colorado Potato Beetle Categories Codeforces Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2) 8
927 Letter A Categories Codeforces Codeforces Beta Round #13 8
928 How Many Squares? Categories Codeforces Codeforces Beta Round #11 8
929 Vasya the Architect Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 8
930 Widget Library Categories Codeforces Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) 8
931 Dance Revolution Categories Timus 8
932 Cutting Jigsaw Puzzle Categories Codeforces Codeforces Beta Round #50 8
933 Game Categories Codeforces Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2) 8
934 Strange Sorting Categories Codeforces Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2) 8
935 Anniversary Categories Codeforces Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2) 8
936 Mad Joe Categories Codeforces CROC-MBTU 2012, Final Round (Online version, Div. 2) 8
937 Crosses Categories Codeforces Codeforces Round #132 (Div. 2) 8
938 Misha and Palindrome Degree Categories Codeforces Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1) 8
939 Hexagonal Numbers Categories Codeforces Surprise Language Round #6 8
940 Piet Categories Codeforces Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2) 8
941 Game Categories Codeforces Codeforces Beta Round #63 (Div. 2) 8
942 Chip Play Categories Codeforces Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) 8
943 A Piece of Cake Categories Codeforces April Fools Day Contest 8
944 Mirror Box Categories Codeforces Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) 8
945 Maze 1D Categories Codeforces Codeforces Round #237 (Div. 2) 8
946 Zbazi in Zeydabad Categories Codeforces Educational Codeforces Round 8 8
947 Gnikool Ssalg Categories Codeforces Unknown Language Round #4 8
948 Vanya and Balloons Categories Codeforces Codeforces Round #355 (Div. 2) 8
949 Beautiful Road Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) 8
950 Dima and Magic Guitar Categories Codeforces Codeforces Round #214 (Div. 2) 8
951 Vectors Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only) 8
952 Sweets Game Categories Codeforces Codeforces Beta Round #59 (Div. 2) 8
953 Sereja and Tree Categories Codeforces Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2) 8
954 Crossword Categories Codeforces Codeforces Beta Round #44 (Div. 2) 8
955 Crystal Ball Sequence Categories Codeforces Surprise Language Round #7 8
956 Defining Macros Categories Codeforces Codeforces Beta Round #7 8
957 Finals in arithmetic Categories Codeforces Codeforces Round #342 (Div. 2) 8
958 New Year and Cleaning Categories Codeforces Good Bye 2015 8
959 Sweets for Everyone! Categories Codeforces Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1) 8
960 Number Challenge Categories Codeforces Codeforces Round #146 (Div. 1) 8
961 Broken Monitor Categories Codeforces Codeforces Round #217 (Div. 2) 8
962 Factorial Categories Codeforces Unknown Language Round #1 8
963 Printer Categories Codeforces Codeforces Round #154 (Div. 2) 8
964 Asterisks Categories Codeforces Surprise Language Round #6 9
965 Fibonacci-ish II Categories Codeforces Manthan, Codefest 16 9
966 Xenia and String Problem Categories Codeforces Codeforces Round #207 (Div. 1) 9
967 Bowls Categories Codeforces Codeforces Beta Round #36 9
968 Shaass and Painter Robot Categories Codeforces Codeforces Round #178 (Div. 2) 9
969 Geometrical problem Categories Codeforces Codeforces Beta Round #48 9
970 O Problema do Sapateiro Viajante Categories SPOJ Brazil 9
971 Tractor College Categories Codeforces Codeforces Round #126 (Div. 2) 9
972 Table Categories Codeforces Unknown Language Round #1 9
973 Pasha and Pipe Categories Codeforces Codeforces Round #293 (Div. 2) 9
974 HQ9+ Categories Codeforces Surprise Language Round #6 9
975 Azembler Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only) 9
976 Solitaire Categories Codeforces Codeforces Beta Round #65 (Div. 2) 9
977 Cycle Categories Codeforces Codeforces Beta Round #97 (Div. 1) 9
978 Hide-and-Seek Categories Codeforces Codeforces Beta Round #32 (Div. 2, Codeforces format) 9
979 Two Paths Categories Codeforces Codeforces Beta Round #36 9
980 Lucky Pair Categories Codeforces Codeforces Round #104 (Div. 1) 9
981 Binary Key Categories Codeforces Codeforces Round #193 (Div. 2) 9
982 Domino Categories Codeforces Yandex.Algorithm 2011 Finals 9
983 Berland Local Positioning System Categories Codeforces Codeforces Round #298 (Div. 2) 9
984 Rats Categories Codeforces Codeforces Round #155 (Div. 2) 9
985 Physical Education and Buns Categories Codeforces Codeforces Round #231 (Div. 2) 9
986 Polo the Penguin and Lucky Numbers Categories Codeforces Codeforces Round #177 (Div. 1) 9
987 Domino Carpet Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) 9
988 Strange Radiation Categories Codeforces Codeforces Round #425 (Div. 2) 9
989 Carpeting the Room Categories Codeforces Unknown Language Round #3 9
990 Race Categories Codeforces Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) 9
991 Binary Notation Categories Codeforces Surprise Language Round #6 9
992 Deputies Categories Codeforces Croc Champ 2012 - Round 1 9
993 Greedy Elevator Categories Codeforces Codeforces Round #159 (Div. 2) 9
994 BF_MODULUS Categories SPOJ 9
995 A + Reverse B Categories Codeforces Surprise Language Round #6 9
996 Dormitory Categories Codeforces Codeforces Round #155 (Div. 2) 9
997 Game with Points Categories Codeforces Testing Round #9 9
998 Sagheer and Kindergarten Categories Codeforces Codeforces Round #417 (Div. 2) 9
999 Friendly Numbers Categories Codeforces Unknown Language Round #3 9
1000 Red and Black Tree Categories Codeforces Codeforces Round #221 (Div. 1) 9
1001 Map Categories Codeforces Codeforces Beta Round #15 9
1002 Array Sorting Categories Codeforces Surprise Language Round #6 9
1003 Battlefield Categories Codeforces Codeforces Round #117 (Div. 2) 9
1004 Reverse It! Categories Codeforces Unknown Language Round #2 9
1005 Dima and Kicks Categories Codeforces Codeforces Round #208 (Div. 2) 9
1006 BLOCK_D SOLVER Categories SPOJ 9
1007 Pairs Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 9
1008 LCM Categories Codeforces Surprise Language Round #6 9
1009 Race Categories Codeforces Codeforces Beta Round #42 (Div. 2) 9
1010 Candies and Stones Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) 9
1011 Information Reform Categories Codeforces Codeforces Beta Round #64 9
1012 Polycarpus is Looking for Good Substrings Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 9
1013 Inquisition Categories Codeforces Codeforces Beta Round #58 9
1014 A+B Categories Codeforces Unknown Language Round #3 9
1015 Item World Categories Codeforces Codeforces Beta Round #81 9
1016 Black Widow Categories Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 9
1017 Bear and Chase Categories Codeforces Codeforces Round #356 (Div. 1) 9
1018 Goofy Numbers Categories Codeforces Unknown Language Round #2 9
1019 Mirror Room Categories Codeforces Codeforces Round #168 (Div. 1) 9
1020 Lucky Segments Categories Codeforces Codeforces Beta Round #91 (Div. 1 Only) 9
1021 Help King Categories Codeforces Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only) 10
1022 A Kleene Implementation Categories SPOJ 10
1023 Sleeping Categories Codeforces Codeforces Beta Round #86 (Div. 1 Only) 10
1024 Entertaining Geodetics Categories Codeforces Codeforces Beta Round #81 10
1025 Red-Black Cobweb Categories Codeforces Codeforces Round #426 (Div. 1) 10
1026 Polynom Categories Codeforces Unknown Language Round #3 10
1027 Hamming Triples Categories Codeforces Codeforces Round #238 (Div. 1) 10
1028 Digits of Number Pi Categories Codeforces Codeforces Round #325 (Div. 1) 10
1029 Name the album Categories Codeforces Unknown Language Round #3 10
1030 Inna and Babies Categories Codeforces Codeforces Round #220 (Div. 2) 10
1031 Escaping on Beaveractor Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 10
1032 Design Tutorial: Learn from a Game Categories Codeforces Codeforces Round #270 10
1033 Two Circles Categories Codeforces Codeforces Round #211 (Div. 2) 10
1034 ALIGNSUBTRACT Categories SPOJ 10
1035 Battleship Categories Codeforces Unknown Language Round #3 10
1036 Sequence Transformation Categories Codeforces Codeforces Round #172 (Div. 1) 10
1037 Gnomes of Might and Magic Categories Codeforces Codeforces Round #115 10
1038 Vasily the Bear and Painting Square Categories Codeforces Codeforces Round #195 (Div. 2) 10
1039 Escaping on Beaveractor Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 10
1040 Shooting Gallery Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 10
1041 INI-file Categories Codeforces Unknown Language Round #2 10
1042 Two Rooted Trees Categories Codeforces Codeforces Round #236 (Div. 1) 10
1043 Robot in Basement Categories Codeforces Yandex.Algorithm 2011 Finals 10
1044 Inverse Function Categories Codeforces School Team Contest #1 (Winter Computer School 2010/11) 10
1045 Suns and Rays Categories Codeforces ABBYY Cup 3.0 10
1046 A polyline Categories Codeforces April Fools Day Contest 10
1047 Deja Vu Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 10
1048 Perpetual Motion Machine Categories Codeforces Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) 10
1049 Tree and Table Categories Codeforces Codeforces Round #153 (Div. 1) 10
1050 Tape Programming Categories Codeforces Codeforces Round #148 (Div. 1) 10
1051 Suns and Rays Categories Codeforces ABBYY Cup 3.0 10
1052 Harry Potter and Moving Staircases Categories Codeforces Codeforces Beta Round #60 10
1053 Stack Categories Codeforces Surprise Language Round #6 10
1054 Tree or not Tree Categories Codeforces Codeforces Beta Round #88 10