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brute force problems
Problem Name Online Judge Year Contest Difficulty Level
1 Mike and Fax Categories Codeforces Codeforces Round #305 (Div. 2) 1
2 Lucky Division Categories Codeforces Codeforces Beta Round #91 (Div. 2 Only) 1
3 Bus to Udayland Categories Codeforces Codeforces Round #369 (Div. 2) 1
4 Appleman and Easy Task Categories Codeforces Codeforces Round #263 (Div. 2) 1
5 Parallelepiped Categories Codeforces Codeforces Round #138 (Div. 2) 1
6 Beautiful Year Categories Codeforces Codeforces Round #166 (Div. 2) 1
7 Karen and Morning Categories Codeforces Codeforces Round #419 (Div. 2) 1
8 Gerald's Hexagon Categories Codeforces Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2) 1
9 Vladik and Courtesy Categories Codeforces Codeforces Round #416 (Div. 2) 1
10 Vasya and Socks Categories Codeforces Codeforces Round #262 (Div. 2) 1
11 Magic Numbers Categories Codeforces Codeforces Round #189 (Div. 2) 1
12 Far Relative’s Birthday Cake Categories Codeforces Codeforces Round #343 (Div. 2) 1
13 Amr and Pins Categories Codeforces Codeforces Round #287 (Div. 2) 1
14 Tavas and SaDDas Categories Codeforces Codeforces Round #299 (Div. 2) 1
15 TL Categories Codeforces Codeforces Round #203 (Div. 2) 1
16 The Monster Categories Codeforces Codeforces Round #406 (Div. 2) 1
17 Counterexample Categories Codeforces Codeforces Round #275 (Div. 2) 1
18 Lucky Sum of Digits Categories Codeforces Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only) 1
19 IQ test Categories Codeforces Codeforces Beta Round #25 (Div. 2 Only) 1
20 QAQ Categories Codeforces Codeforces Round #447 (Div. 2) 1
21 Cut Ribbon Categories Codeforces Codeforces Round #119 (Div. 2) 1
22 Soldier and Badges Categories Codeforces Codeforces Round #304 (Div. 2) 1
23 Flipping Game Categories Codeforces Codeforces Round #191 (Div. 2) 1
24 System of Equations Categories Codeforces Codeforces Round #131 (Div. 2) 1
25 Playing with Dice Categories Codeforces Codeforces Round #222 (Div. 2) 1
26 Fence Categories Codeforces Codeforces Round #211 (Div. 2) 1
27 Two Substrings Categories Codeforces Codeforces Round #306 (Div. 2) 1
28 Dreamoon and WiFi Categories Codeforces Codeforces Round #272 (Div. 2) 1
29 Beru-taxi Categories Codeforces Codeforces Round #367 (Div. 2) 1
30 Play with Dates Categories SPOJ 1
31 Candy Categories SPOJ 1
32 Minimum Difficulty Categories Codeforces Codeforces Round #283 (Div. 2) 1
33 Han Solo and Lazer Gun Categories Codeforces Codeforces Round #291 (Div. 2) 1
34 I_love_\%username\% Categories Codeforces Codeforces Round #109 (Div. 2) 1
35 Team Categories Codeforces Codeforces Round #143 (Div. 2) 1
36 Watermelon Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 1
37 Grouping Problem Categories TJU 1
38 Soldier and Cards Categories Codeforces Codeforces Round #304 (Div. 2) 1
39 Fraction Categories Codeforces Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises) 1
40 Candy I Categories SPOJ 1
41 Cakeminator Categories Codeforces Codeforces Round #192 (Div. 2) 1
42 Panoramix's Prediction Categories Codeforces Codeforces Beta Round #69 (Div. 2 Only) 1
43 Kefa and First Steps Categories Codeforces Codeforces Round #321 (Div. 2) 1
44 Burger Time? Categories UVA 1
45 Preparing Olympiad Categories Codeforces Codeforces Round #306 (Div. 2) 1
46 Lala Land and Apple Trees Categories Codeforces Codeforces Round #312 (Div. 2) 1
47 Number of Ways Categories Codeforces Codeforces Round #266 (Div. 2) 1
48 Mike and palindrome Categories Codeforces Codeforces Round #410 (Div. 2) 1
49 Array Categories Codeforces Codeforces Round #181 (Div. 2) 1
50 Kyoya and Photobooks Categories Codeforces Codeforces Round #309 (Div. 2) 1
51 Taymyr is calling you Categories Codeforces Codeforces Round #395 (Div. 2) 1
52 Maximum in Table Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 1
53 Ice Skating Categories Codeforces Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) 1
54 Games Categories Codeforces Codeforces Round #164 (Div. 2) 1
55 Pangram Categories Codeforces Codeforces Round #295 (Div. 2) 1
56 Bear and Raspberry Categories Codeforces Codeforces Round #226 (Div. 2) 1
57 Divisibility by Eight Categories Codeforces Codeforces Round #306 (Div. 2) 1
58 Expression Categories Codeforces Codeforces Round #274 (Div. 2) 1
59 Fedor and New Game Categories Codeforces Codeforces Round #267 (Div. 2) 1
60 Books Categories Codeforces Codeforces Round #171 (Div. 2) 1
61 Generous Kefa Categories Codeforces Codeforces Round #429 (Div. 2) 1
62 Jeff and Digits Categories Codeforces Codeforces Round #204 (Div. 2) 1
63 Triangle Categories Codeforces Codeforces Beta Round #6 (Div. 2 Only) 1
64 The Artful Expedient Categories Codeforces Codeforces Round #439 (Div. 2) 1
65 Giga Tower Categories Codeforces Codeforces Round #278 (Div. 2) 1
66 Hexadecimal's theorem Categories Codeforces Codeforces Round #125 (Div. 2) 1
67 Bear and Three Balls Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 2
68 Ohana Cleans Up Categories Codeforces Codeforces Round #309 (Div. 2) 2
69 Multiplication Table Categories Codeforces Codeforces Round #256 (Div. 2) 2
70 Kirill And The Game Categories Codeforces Codeforces Round #430 (Div. 2) 2
71 Triangular numbers Categories Codeforces Codeforces Beta Round #44 (Div. 2) 2
72 Help Vasilisa the Wise 2 Categories Codeforces Codeforces Round #102 (Div. 2) 2
73 Link/Cut Tree Categories Codeforces Codeforces Round #339 (Div. 2) 2
74 Sail Categories Codeforces Codeforces Round #180 (Div. 2) 2
75 Towers Categories Codeforces Codeforces Round #274 (Div. 2) 2
76 Pride Categories Codeforces Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2) 2
77 Mr. Kitayuta's Colorful Graph Categories Codeforces Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) 2
78 Bear and Strings Categories Codeforces Codeforces Round #226 (Div. 2) 2
79 Prizes, Prizes, more Prizes Categories Codeforces Codeforces Round #130 (Div. 2) 2
80 Okabe and Banana Trees Categories Codeforces Codeforces Round #420 (Div. 2) 2
81 Ice Sculptures Categories Codeforces VK Cup 2012 Qualification Round 1 2
82 Economy Game Categories Codeforces Codeforces Round #357 (Div. 2) 2
83 Mike and Fun Categories Codeforces Codeforces Round #305 (Div. 2) 2
84 Lucky Substring Categories Codeforces Codeforces Beta Round #91 (Div. 2 Only) 2
85 Case of Fake Numbers Categories Codeforces Codeforces Round #310 (Div. 2) 2
86 Prime Matrix Categories Codeforces Codeforces Round #166 (Div. 2) 2
87 Vicious Keyboard Categories Codeforces Codeforces Round #409 (rated, Div. 2, based on VK Cup 2017 Round 2) 2
88 Shower Line Categories Codeforces Codeforces Round #247 (Div. 2) 2
89 Thor Categories Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 2
90 Letters Categories Codeforces Codeforces Round #481 (Div. 3) 2
91 Mr. Kitayuta's Colorful Graph Categories Codeforces Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) 2
92 Little Dima and Equation Categories Codeforces Codeforces Round #262 (Div. 2) 2
93 Far Relative’s Problem Categories Codeforces Codeforces Round #343 (Div. 2) 2
94 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
95 Alyona and copybooks Categories Codeforces Codeforces Round #381 (Div. 2) 2
96 Vladik and fractions Categories Codeforces Codeforces Round #384 (Div. 2) 2
97 New Year and Old Property Categories Codeforces Good Bye 2015 2
98 Cutting Banner Categories Codeforces Codeforces Round #300 2
99 Football Kit Categories Codeforces Codeforces Round #246 (Div. 2) 2
100 Petya and Countryside Categories Codeforces Codeforces Beta Round #61 (Div. 2) 2
101 Ebony and Ivory Categories Codeforces Manthan, Codefest 16 2
102 Pizza Separation Categories Codeforces Codeforces Round #448 (Div. 2) 2
103 Dima and Continuous Line Categories Codeforces Codeforces Round #208 (Div. 2) 2
104 Robot Sequence Categories Codeforces 8VC Venture Cup 2016 - Elimination Round 2
105 Valuable Resources Categories Codeforces Codeforces Round #276 (Div. 2) 2
106 Strongly Connected City Categories Codeforces Bayan 2015 Contest Warm Up 2
107 Group of Students Categories Codeforces Codeforces Round #207 (Div. 2) 2
108 IQ Test Categories Codeforces Codeforces Round #176 (Div. 2) 2
109 Interview Categories Codeforces Codeforces Round #344 (Div. 2) 2
110 Pasha and Pixels Categories Codeforces Codeforces Round #288 (Div. 2) 2
111 Parallelogram is Back Categories Codeforces Codeforces Round #388 (Div. 2) 2
112 Hacking Cypher Categories Codeforces Codeforces Round #279 (Div. 2) 2
113 Second Order Statistics Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 2
114 Tourist's Notes Categories Codeforces Codeforces Round #300 2
115 Kitahara Haruki's Gift Categories Codeforces Codeforces Round #248 (Div. 2) 2
116 GRADE POINT AVERAGE Categories SPOJ 2
117 Little Elephant and Magic Square Categories Codeforces Codeforces Round #157 (Div. 2) 2
118 Little Elephant and Rozdil Categories Codeforces Codeforces Round #129 (Div. 2) 2
119 2Char Categories Codeforces Codeforces Round #329 (Div. 2) 2
120 Drazil and His Happy Friends Categories Codeforces Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2) 2
121 Chtholly's request Categories Codeforces Codeforces Round #449 (Div. 2) 2
122 Bear and Three Musketeers Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 2
123 George and Round Categories Codeforces Codeforces Round #227 (Div. 2) 2
124 Hexadecimal's Numbers Categories Codeforces Codeforces Beta Round #9 (Div. 2 Only) 2
125 Polo the Penguin and Matrix Categories Codeforces Codeforces Round #177 (Div. 2) 2
126 Simple Molecules Categories Codeforces Codeforces Round #200 (Div. 2) 2
127 Ilya and tic-tac-toe game Categories Codeforces Codeforces Round #390 (Div. 2) 2
128 Bicycle Chain Categories Codeforces Codeforces Round #132 (Div. 2) 2
129 Mike and strings Categories Codeforces Codeforces Round #410 (Div. 2) 2
130 Shooshuns and Sequence Categories Codeforces Codeforces Round #137 (Div. 2) 2
131 Lucky Numbers (easy) Categories Codeforces Codeforces Beta Round #77 (Div. 2 Only) 2
132 Little Elephant and Chess Categories Codeforces Codeforces Round #157 (Div. 2) 2
133 Removing Columns Categories Codeforces Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1) 2
134 Another Problem on Strings Categories Codeforces Codeforces Round #112 (Div. 2) 2
135 Game Outcome Categories Codeforces Codeforces Round #110 (Div. 2) 2
136 Restoring Painting Categories Codeforces Codeforces Round #353 (Div. 2) 2
137 Hamburgers Categories Codeforces Codeforces Round #218 (Div. 2) 2
138 Gennady the Dentist Categories Codeforces Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2) 3
139 Catch Me If You Can Categories SPOJ 3
140 Vasya and Robot Categories Codeforces Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) 3
141 A + B Strikes Back Categories Codeforces April Fools Day Contest 2014 3
142 An impassioned circulation of affection Categories Codeforces Codeforces Round #418 (Div. 2) 3
143 "Or" Game Categories Codeforces Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] 3
144 Bear and Compressing Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 3
145 Noldbach problem Categories Codeforces Codeforces Beta Round #17 3
146 Non-square Equation Categories Codeforces Codeforces Round #144 (Div. 2) 3
147 Permutations Categories Codeforces Rockethon 2015 3
148 Two Problems Categories Codeforces Codeforces Round #128 (Div. 2) 3
149 Point on Spiral Categories Codeforces Codeforces Round #171 (Div. 2) 3
150 Vasya and Basketball Categories Codeforces Codeforces Round #281 (Div. 2) 3
151 Colorful Graph Categories Codeforces Codeforces Round #151 (Div. 2) 3
152 Vanya and Scales Categories Codeforces Codeforces Round #308 (Div. 2) 3
153 Students and Shoelaces Categories Codeforces Codeforces Beta Round #94 (Div. 2 Only) 3
154 Primes or Palindromes? Categories Codeforces Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2) 3
155 Dima and To-do List Categories Codeforces Codeforces Round #214 (Div. 2) 3
156 Bear and Prime Numbers Categories Codeforces Codeforces Round #226 (Div. 2) 3
157 Kalevitch and Chess Categories Codeforces Codeforces Beta Round #7 3
158 Cows and Poker Game Categories Codeforces Codeforces Round #174 (Div. 2) 3
159 King of Thieves Categories Codeforces ZeptoLab Code Rush 2015 3
160 Art Union Categories Codeforces Codeforces Round #241 (Div. 2) 3
161 Unbearable Controversy of Being Categories Codeforces Codeforces Round #277.5 (Div. 2) 3
162 Heads or Tails Categories Codeforces Codeforces Round #149 (Div. 2) 3
163 Finding Team Member Categories Codeforces Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] 3
164 Karen and Game Categories Codeforces Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) 3
165 Searching for Graph Categories Codeforces Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) 3
166 Sagheer, the Hausmeister Categories Codeforces Codeforces Round #417 (Div. 2) 3
167 Let's Watch Football Categories Codeforces Codeforces Round #123 (Div. 2) 3
168 Reconnaissance Categories Codeforces Codeforces Beta Round #32 (Div. 2, Codeforces format) 3
169 Mike and Cellphone Categories Codeforces Codeforces Round #361 (Div. 2) 3
170 Dress'em in Vests! Categories Codeforces VK Cup 2012 Round 1 3
171 The Text Splitting Categories Codeforces Educational Codeforces Round 4 3
172 Funky Numbers Categories Codeforces Codeforces Round #121 (Div. 2) 3
173 Color Stripe Categories Codeforces Codeforces Round #135 (Div. 2) 3
174 A Trivial Problem Categories Codeforces Manthan, Codefest 16 3
175 Tic-tac-toe Categories Codeforces Codeforces Beta Round #3 3
176 Triangle Categories Codeforces Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) 3
177 Perfect Pair Categories Codeforces Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2) 3
178 Block Towers Categories Codeforces 8VC Venture Cup 2016 - Elimination Round 3
179 Secret Combination Categories Codeforces Codeforces Round #283 (Div. 2) 3
180 Little Xor Categories Codeforces Codeforces Round #153 (Div. 2) 3
181 Mahmoud and a Message Categories Codeforces Codeforces Round #396 (Div. 2) 3
182 Pythagorean Theorem II Categories Codeforces Codeforces Round #183 (Div. 2) 3
183 Inna and New Matrix of Candies Categories Codeforces Codeforces Round #234 (Div. 2) 3
184 Ball Game Categories Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 3
185 LLPS Categories Codeforces Codeforces Round #127 (Div. 2) 3
186 Sereja and Bottles Categories Codeforces Codeforces Round #187 (Div. 2) 3
187 Robbers' watch Categories Codeforces Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2) 3
188 Polo the Penguin and Segments Categories Codeforces Codeforces Round #177 (Div. 2) 3
189 Common Divisors Categories Codeforces Codeforces Round #117 (Div. 2) 3
190 Phone Code Categories Codeforces Croc Champ 2012 - Qualification Round 3
191 Masha and geometric depression Categories Codeforces Codeforces Round #407 (Div. 2) 3
192 Coach Categories Codeforces Codeforces Round #181 (Div. 2) 3
193 Fox And Jumping Categories Codeforces Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) 4
194 Balls Game Categories Codeforces Codeforces Round #245 (Div. 2) 4
195 Strange Addition Categories Codeforces Codeforces Round #184 (Div. 2) 4
196 Fire Again Categories Codeforces Codeforces Beta Round #35 (Div. 2) 4
197 ZgukistringZ Categories Codeforces Codeforces Round #307 (Div. 2) 4
198 MUH and House of Cards Categories Codeforces Codeforces Round #269 (Div. 2) 4
199 Two Tables Categories Codeforces Codeforces Round #141 (Div. 2) 4
200 You're Given a String... Categories Codeforces Codeforces Beta Round #23 4
201 Orchestra Categories Codeforces 8VC Venture Cup 2016 - Final Round (Div. 2 Edition) & 8VC Venture Cup 2016 - Final Round (Div. 1 Edition) 4
202 Ancient Prophesy Categories Codeforces Codeforces Round #158 (Div. 2) 4
203 Devu and Partitioning of the Array Categories Codeforces Codeforces Round #251 (Div. 2) 4
204 Spit Problem Categories Codeforces Codeforces Beta Round #29 (Div. 2, Codeforces format) 4
205 Beautiful Numbers Categories Codeforces Codeforces Round #181 (Div. 2) 4
206 Pair of Numbers Categories Codeforces Codeforces Round #209 (Div. 2) 4
207 Chord Categories Codeforces Codeforces Beta Round #73 (Div. 2 Only) 4
208 Letter Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 4
209 Trees in a Row Categories Codeforces Codeforces Round #236 (Div. 2) 4
210 Lucky Mask Categories Codeforces Codeforces Round #104 (Div. 2) 4
211 Ksusha and Array Categories Codeforces Croc Champ 2013 - Round 2 (Div. 2 Edition) 4
212 Captain Marmot Categories Codeforces Codeforces Round #271 (Div. 2) 4
213 Shifts Categories Codeforces Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2) 4
214 Tennis Game Categories Codeforces Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1) 4
215 Promocodes with Mistakes Categories Codeforces VK Cup 2016 - Qualification Round 1 4
216 Elevator Categories Codeforces School Regional Team Contest, Saratov, 2011 4
217 Vanya and Triangles Categories Codeforces Codeforces Round #308 (Div. 2) 4
218 Spongebob and Squares Categories Codeforces Codeforces Round #332 (Div. 2) 4
219 Minion Circle Categories CodeChef 4
220 String Manipulation 1.0 Categories Codeforces VK Cup 2012 Qualification Round 2 4
221 Triangle Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 4
222 Arthur and Table Categories Codeforces Codeforces Round #311 (Div. 2) 4
223 Wonder Room Categories Codeforces Codeforces Round #266 (Div. 2) 4
224 Predict Outcome of the Game Categories Codeforces Codeforces Round #258 (Div. 2) 4
225 Resort Categories Codeforces Codeforces Round #203 (Div. 2) 4
226 Remove Extra One Categories Codeforces Codeforces Round #450 (Div. 2) 4
227 Roads not only in Berland Categories Codeforces Codeforces Beta Round #25 (Div. 2 Only) 4
228 Xenia and Spies Categories Codeforces Codeforces Round #199 (Div. 2) 4
229 Counting Rhombi Categories Codeforces Codeforces Round #119 (Div. 2) 4
230 Running Student Categories Codeforces Codeforces Beta Round #9 (Div. 2 Only) 4
231 TWO BISHOPS Categories SPOJ 4
232 Hometask Categories Codeforces Codeforces Round #131 (Div. 2) 4
233 Kolya and Tandem Repeat Categories Codeforces Codeforces Round #253 (Div. 2) 4
234 Undoubtedly Lucky Numbers Categories Codeforces Codeforces Round #150 (Div. 2) 4
235 Sereja and Prefixes Categories Codeforces Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2) 4
236 Office Keys Categories Codeforces Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals) 4
237 View Angle Categories Codeforces Codeforces Round #159 (Div. 2) 4
238 New Problem Categories Codeforces Codeforces Round #170 (Div. 2) 4
239 Mountain Scenery Categories Codeforces Codeforces Round #134 (Div. 2) 4
240 Little Pony and Harmony Chest Categories Codeforces Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) 4
241 Brute-force Algorithm Categories Live Archive 2009 Asia - Shanghai 4
242 Palindrome pairs Categories Codeforces VK Cup 2012 Qualification Round 2 4
243 Message Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 4
244 Fight the Monster Categories Codeforces Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) 4
245 Magic Box Categories Codeforces Codeforces Round #143 (Div. 2) 4
246 Tournament Categories Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 4
247 Dima and Text Messages Categories Codeforces Codeforces Round #208 (Div. 2) 4
248 Amity Assessment Categories Codeforces CROC 2016 - Elimination Round 4
249 Alice, Bob, Two Teams Categories Codeforces Educational Codeforces Round 9 4
250 Almost Arithmetical Progression Categories Codeforces Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) 4
251 Sereja and Swaps Categories Codeforces Codeforces Round #243 (Div. 1) & Codeforces Round #243 (Div. 2) 4
252 DZY Loves Modification Categories Codeforces Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2) 4
253 Game of the Rows Categories Codeforces Codeforces Round #428 (Div. 2) 4
254 Three Logos Categories Codeforces Codeforces Round #322 (Div. 2) 4
255 Walking in the Rain Categories Codeforces Codeforces Round #121 (Div. 2) 4
256 Amr and Chemistry Categories Codeforces Codeforces Round #312 (Div. 2) 4
257 Choosing Laptop Categories Codeforces Codeforces Beta Round #82 (Div. 2) 4
258 Weird Chess Categories Codeforces Codeforces Round #300 4
259 Little Elephant and Sorting Categories Codeforces Codeforces Round #129 (Div. 2) 4
260 Tell Your World Categories Codeforces Codeforces Round #431 (Div. 2) 4
261 Four Segments Categories Codeforces Codeforces Beta Round #14 (Div. 2) 5
262 Network Mask Categories Codeforces Croc Champ 2013 - Qualification Round 5
263 The Queue Categories Codeforces Codeforces Round #398 (Div. 2) 5
264 Roman and Numbers Categories Codeforces Codeforces Round #235 (Div. 2) 5
265 Beauty Pageant Categories Codeforces Codeforces Round #151 (Div. 2) 5
266 Petr# Categories Codeforces Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) 5
267 Nearest Fraction Categories Codeforces Codeforces Round #172 (Div. 2) 5
268 Fancy Number Categories Codeforces Codeforces Beta Round #89 (Div. 2) 5
269 Chocolate Bar Categories Codeforces Educational Codeforces Round 1 5
270 4-point polyline Categories Codeforces MemSQL Start[c]UP 2.0 - Round 1 5
271 Candy Boxes Categories Codeforces Codeforces Round #278 (Div. 2) 5
272 Counting Rectangles is Fun Categories Codeforces Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) 5
273 Continued Fractions Categories Codeforces Codeforces Round #184 (Div. 2) 5
274 CGCDSSQ Categories Codeforces Bayan 2015 Contest Warm Up 5
275 Boulevard Categories Codeforces 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) 5
276 Inversions problem Categories Codeforces Rockethon 2015 5
277 Average Numbers Categories Codeforces Codeforces Testing Round #3 5
278 Hanoi Factory Categories Codeforces Codeforces Round #401 (Div. 2) 5
279 Chess Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 5
280 Vasya and Beautiful Arrays Categories Codeforces Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) 5
281 Robot Bicorn Attack Categories Codeforces Codeforces Round #115 5
282 Jury Size Categories Codeforces Codeforces Round #155 (Div. 2) 5
283 Borya and Hanabi Categories Codeforces Codeforces Round #253 (Div. 1) & Codeforces Round #253 (Div. 2) 5
284 Accounting Categories Codeforces Codeforces Beta Round #30 (Codeforces format) 5
285 Permutations Categories Codeforces Codeforces Beta Round #92 (Div. 2 Only) 5
286 Series of Crimes Categories Codeforces Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition) 5
287 Game on Paper Categories Codeforces Codeforces Round #128 (Div. 2) 5
288 Compatible Numbers Categories Codeforces Codeforces Round #112 (Div. 2) 5
289 Ksusha the Squirrel Categories Codeforces Croc Champ 2013 - Round 2 (Div. 2 Edition) 5
290 Three Sons Categories Codeforces School Regional Team Contest, Saratov, 2011 5
291 Om Nom and Candies Categories Codeforces ZeptoLab Code Rush 2015 5
292 Help Farmer Categories Codeforces Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) 5
293 PFAST Inc. Categories Codeforces Codeforces Beta Round #86 (Div. 2 Only) 5
294 Petya and His Friends Categories Codeforces Codeforces Beta Round #61 (Div. 2) 5
295 Broken checker Categories Codeforces April Fools Day Contest 5
296 Rectangle and Square Categories Codeforces Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2) 5
297 Martian Dollar Categories Codeforces Codeforces Beta Round #40 (Div. 2) 5
298 Clothes Categories Codeforces Codeforces Beta Round #79 (Div. 2 Only) 5
299 Mike and Frog Categories Codeforces Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2) 5
300 Brute-force Algorithm EXTREME Categories SPOJ 5
301 Skills Categories Codeforces Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2) 5
302 Chocolate Categories Codeforces Codeforces Round #279 (Div. 2) 5
303 Bitwise Formula Categories Codeforces Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2) 5
304 Bargaining Table Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 5
305 Vasily the Bear and Sequence Categories Codeforces Codeforces Round #195 (Div. 2) 5
306 Fibonacci-ish Categories Codeforces Manthan, Codefest 16 5
307 Restore Cube Categories Codeforces Codeforces Round #265 (Div. 1) 5
308 Jerry's Protest Categories Codeforces 8VC Venture Cup 2016 - Elimination Round 5
309 Number With The Given Amount Of Divisors Categories Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 5
310 Calendar Categories Codeforces Codeforces Round #183 (Div. 2) 5
311 Shopping Categories Codeforces Educational Codeforces Round 12 5
312 Time to Raid Cowavans Categories Codeforces Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only) 6
313 Karen and Supermarket Categories Codeforces Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) 6
314 Kingdoms Categories UVA 6
315 Mr. Bender and Square Categories Codeforces Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) 6
316 Harry Potter and the History of Magic Categories Codeforces Codeforces Beta Round #60 6
317 FLING1 Categories SPOJ 6
318 Party Categories Codeforces ABBYY Cup 2.0 - Easy 6
319 Longest Subsequence Categories Codeforces Educational Codeforces Round 9 6
320 EKG Categories Codeforces ABBYY Cup 3.0 6
321 Restoring Increasing Sequence Categories Codeforces Codeforces Round #279 (Div. 2) 6
322 String Categories Codeforces Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only) 6
323 Lizards and Basements 2 Categories Codeforces Codeforces Beta Round #6 (Div. 2 Only) 6
324 A Heap of Heaps Categories Codeforces Codeforces Round #300 6
325 Anya and Cubes Categories Codeforces Codeforces Round #297 (Div. 2) 6
326 Trees Categories Codeforces Codeforces Beta Round #54 (Div. 2) 6
327 Karen and Test Categories Codeforces Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) 6
328 Caisa and Tree Categories Codeforces Codeforces Round #264 (Div. 2) 6
329 Little Elephant and Elections Categories Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) 6
330 Divisors Categories Codeforces Codeforces Round #256 (Div. 2) 6
331 Characteristics of Rectangles Categories Codeforces Codeforces Round #194 (Div. 1) 6
332 Maximal Area Quadrilateral Categories Codeforces Codeforces Round #198 (Div. 2) 6
333 Encrypting Messages Categories Codeforces ABBYY Cup 2.0 - Easy 6
334 Bulls and Cows Categories Codeforces Codeforces Beta Round #59 (Div. 2) 6
335 Vladik and cards Categories Codeforces Codeforces Round #384 (Div. 2) 6
336 New Year Cards Categories Codeforces Codeforces Round #100 6
337 Bear and Up-Down Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 6
338 Little Elephant and LCM Categories Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) 6
339 Land Lot Categories Codeforces School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) 6
340 Summer Homework Categories Codeforces ABBYY Cup 3.0 6
341 Lucky Probability Categories Codeforces Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only) 6
342 Fly, freebies, fly! Categories Codeforces Testing Round #9 6
343 Blinds Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 6
344 Vanya and Brackets Categories Codeforces Codeforces Round #308 (Div. 2) 6
345 Heroes Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only) 6
346 New Year Letter Categories Codeforces Good Bye 2013 6
347 Wonderful Randomized Sum Categories Codeforces Codeforces Beta Round #33 (Codeforces format) 6
348 Hot Bath Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) 6
349 Number of Triplets Categories Codeforces Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition) 6
350 Platforms Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 6
351 Lucky Permutation Categories Codeforces Codeforces Beta Round #91 (Div. 1 Only) & Codeforces Beta Round #91 (Div. 2 Only) 6
352 Sum of Medians Categories Codeforces Yandex.Algorithm 2011 Round 1 6
353 Oh Sweet Beaverette Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 6
354 Very Interesting Game Categories Codeforces Codeforces Beta Round #88 6
355 Ants Categories Codeforces Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2) 6
356 Unsorting Array Categories Codeforces Codeforces Round #153 (Div. 2) 6
357 Smallest number Categories Codeforces Codeforces Beta Round #51 6
358 Easy Tape Programming Categories Codeforces Codeforces Round #148 (Div. 2) 6
359 Group Photo 2 (online mirror version) Categories Codeforces VK Cup 2015 - Round 1 (unofficial online mirror, Div. 1 only) 7
360 Subset Sums Categories Codeforces Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2) 7
361 Brand New Easy Problem Categories Codeforces Codeforces Round #127 (Div. 2) 7
362 Xor Categories Codeforces Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2) 7
363 Treasure Island Categories Codeforces Codeforces Beta Round #82 (Div. 2) 7
364 Peterson Polyglot Categories Codeforces Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2) 7
365 Divisor Tree Categories Codeforces Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1) 7
366 Spiral Maximum Categories Codeforces Croc Champ 2012 - Round 1 7
367 Table with Letters - 2 Categories Codeforces Codeforces Round #154 (Div. 2) 7
368 ucyhf Categories Codeforces April Fools Day Contest 7
369 Game Categories Codeforces Codeforces Beta Round #46 (Div. 2) 7
370 Anton and Permutation Categories Codeforces Codeforces Round #404 (Div. 2) 7
371 Journey Categories Codeforces Codeforces Beta Round #42 (Div. 2) 7
372 Beautiful IP Addresses Categories Codeforces Croc Champ 2013 - Round 1 7
373 Dark Assembly Categories Codeforces Codeforces Beta Round #81 7
374 Blackboard Fibonacci Categories Codeforces Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) 7
375 THE N WITTY FRIENDS Categories SPOJ 7
376 Rat Kwesh and Cheese Categories Codeforces Codeforces Round #341 (Div. 2) 7
377 Football Championship Categories Codeforces Codeforces Round #126 (Div. 2) 7
378 Log Stream Analysis Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 7
379 Double Happiness Categories Codeforces Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) 7
380 Minimum Modular Categories Codeforces Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2) 7
381 Pairs of Numbers Categories Codeforces Codeforces Testing Round #3 7
382 Binary Table Categories Codeforces CROC 2016 - Final Round [Private, For Onsite Finalists Only] 7
383 Bamboo Partition Categories Codeforces Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals) 7
384 Little Victor and Set Categories Codeforces Codeforces Round #262 (Div. 2) 7
385 Help Victoria the Wise Categories Codeforces Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only) 7
386 Three-dimensional Turtle Super Computer Categories Codeforces VK Cup 2016 - Qualification Round 2 7
387 Programming Language Categories Codeforces Codeforces Round #126 (Div. 2) 7
388 Vladik and chat Categories Codeforces Codeforces Round #390 (Div. 2) 7
389 Wrong Floyd Categories Codeforces Codeforces Round #203 (Div. 2) 7
390 Special Grid Categories Codeforces Codeforces Round #249 (Div. 2) 7
391 Kamal-ol-molk's Painting Categories Codeforces Bayan 2015 Contest Warm Up 7
392 Hongcow Buys a Deck of Cards Categories Codeforces Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) 7
393 Fuzzy Search Categories Codeforces Codeforces Round #296 (Div. 1) 7
394 Elections Categories Codeforces MemSQL Start[c]UP 2.0 - Round 2 7
395 Edo and Magnets Categories Codeforces Codeforces Round #330 (Div. 1) & Codeforces Round #330 (Div. 2) 7
396 Curious Array Categories Codeforces Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) 7
397 Seller Bob Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 7
398 Gosha is hunting Categories Codeforces Codeforces Round #381 (Div. 1) 8
399 Crosses Categories Codeforces Codeforces Round #132 (Div. 2) 8
400 Ghd Categories Codeforces Codeforces Round #213 (Div. 1) 8
401 Zoo Categories Codeforces Croc Champ 2012 - Final 8
402 Cinema Categories Codeforces Codeforces Round #126 (Div. 2) 8
403 Magic Matrix Categories Codeforces Educational Codeforces Round 9 8
404 Safe Categories Codeforces Codeforces Beta Round #44 (Div. 2) 8
405 Sereja and Tree Categories Codeforces Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2) 8
406 Mushroom Strife Categories Codeforces Codeforces Beta Round #56 8
407 The Diameter of Tree Categories Live Archive 2014 Asia - Xian 8
408 Distinct Paths Categories Codeforces Croc Champ 2013 - Round 2 8
409 Timofey and remoduling Categories Codeforces Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2) 8
410 Chip Play Categories Codeforces Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) 8
411 Summer Earnings Categories Codeforces Codeforces Round #194 (Div. 1) 8
412 Mad Joe Categories Codeforces CROC-MBTU 2012, Final Round (Online version, Div. 2) 8
413 Dima and Magic Guitar Categories Codeforces Codeforces Round #214 (Div. 2) 8
414 Biathlon Track Categories Codeforces Codeforces Round #242 (Div. 2) 8
415 Cube Problem Categories Codeforces Croc Champ 2013 - Round 2 8
416 Kay and Eternity Categories Codeforces Codeforces Round #359 (Div. 1) 8
417 Vanya and Balloons Categories Codeforces Codeforces Round #355 (Div. 2) 8
418 Broken Monitor Categories Codeforces Codeforces Round #217 (Div. 2) 8
419 Suggested Friends Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 8
420 Help Caretaker Categories Codeforces Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) 8
421 Polycarpus the Safecracker Categories Codeforces VK Cup 2012 Round 1 8
422 Collisions Categories Codeforces Codeforces Beta Round #34 (Div. 2) 8
423 Beautiful Set Categories Codeforces Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2) 8
424 Dividing Kingdom II Categories Codeforces Codeforces Round #360 (Div. 1) 8
425 Mother of Dragons Categories Codeforces Codeforces Round #428 (Div. 2) 8
426 Safe cracking Categories Codeforces Codeforces Beta Round #41 8
427 Dima and Kicks Categories Codeforces Codeforces Round #208 (Div. 2) 9
428 Lucky Tickets Categories Codeforces Codeforces Round #194 (Div. 1) & Codeforces Round #194 (Div. 2) 9
429 Large Refrigerator Categories Codeforces VK Cup 2012 Round 2 9
430 Domino Categories Codeforces Yandex.Algorithm 2011 Finals 9
431 Dividing Kingdom Categories Codeforces Codeforces Round #158 (Div. 2) 9
432 Race Categories Codeforces Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) 9
433 The Tournament Categories Codeforces Rockethon 2014 9
434 Harry Potter and the Sorting Hat Categories Codeforces Codeforces Beta Round #60 9
435 Ever-Hungry Krakozyabra Categories Codeforces Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2) 9
436 Walls Categories Live Archive 2012 North America - Southeast USA 9
437 PE Lesson Categories Codeforces ABBYY Cup 3.0 9
438 Minimum Diameter Categories Codeforces VK Cup 2012 Round 3 9
439 Fibonacci Number Categories Codeforces Codeforces Round #122 (Div. 1) 9
440 Maxim and Calculator Categories Codeforces Codeforces Round #160 (Div. 1) 9
441 Bear and Chase Categories Codeforces Codeforces Round #356 (Div. 1) 9
442 Supercollider Categories Codeforces Rockethon 2014 9
443 Race Categories Codeforces Codeforces Beta Round #42 (Div. 2) 9
444 Item World Categories Codeforces Codeforces Beta Round #81 9
445 The Last Hole! Categories Codeforces Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2) 9
446 Bitonix' Patrol Categories Codeforces Codeforces Round #134 (Div. 1) 9
447 Frames Categories Codeforces Codeforces Round #108 (Div. 2) 9
448 Task processing Categories Codeforces 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) 9
449 Sign Posts Categories Codeforces Codeforces Round #315 (Div. 1) 9
450 Dasha and cyclic table Categories Codeforces Codeforces Round #390 (Div. 2) 9
451 Pumping Stations Categories Codeforces Codeforces Round #200 (Div. 1) 9
452 Plane of Tanks: Duel Categories Codeforces Codeforces Round #115 9
453 Rats Categories Codeforces Codeforces Round #155 (Div. 2) 9
454 Rhombus Categories Codeforces Codeforces Round #161 (Div. 2) 9
455 Savior Categories Codeforces Codeforces Beta Round #56 9
456 Physical Education and Buns Categories Codeforces Codeforces Round #231 (Div. 2) 9
457 Brand New Problem Categories Codeforces Codeforces Round #127 (Div. 1) 9
458 Fetch the Treasure Categories Codeforces Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) 9
459 Travelling Through the Snow Queen's Kingdom Categories Codeforces Codeforces Round #359 (Div. 1) 9
460 Azembler Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only) 9
461 Rectangles and Square Categories Codeforces MemSQL start[c]up Round 2 - online version 9
462 Writing a Song Categories Codeforces Codeforces Beta Round #50 9
463 Synchrophasotron Categories Codeforces Codeforces Beta Round #62 9
464 Gripping Story Categories Codeforces Codeforces Round #125 (Div. 1) 9
465 Roland and Rose Categories Codeforces Codeforces Round #262 (Div. 2) 9
466 Power Defence Categories Codeforces Codeforces Round #115 9
467 Prime Segment Categories Codeforces Unknown Language Round #1 9
468 BLOCK_D SOLVER Categories SPOJ 9
469 Shaass and Painter Robot Categories Codeforces Codeforces Round #178 (Div. 2) 9
470 Solitaire Categories Codeforces Codeforces Beta Round #65 (Div. 2) 9
471 Pasha and Pipe Categories Codeforces Codeforces Round #293 (Div. 2) 9
472 Word Folding Categories Codeforces Rockethon 2014 9
473 Cycle Categories Codeforces Codeforces Beta Round #97 (Div. 1) 9
474 Long sequence Categories Codeforces Yandex.Algorithm 2011 Round 2 10
475 Chain Reaction Categories Codeforces Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2) 10
476 Ali goes shopping Categories Codeforces Unknown Language Round #2 10
477 Gears Categories Codeforces Codeforces Round #283 (Div. 1) 10
478 Hellish Constraints Categories Codeforces Codeforces Beta Round #99 (Div. 1) 10
479 Robot in Basement Categories Codeforces Yandex.Algorithm 2011 Finals 10
480 Plane of Tanks Categories Codeforces Codeforces Beta Round #66 10
481 Tennis Rackets Categories Codeforces Croc Champ 2013 - Finals (online version, Div. 1) 10
482 Mrs. Hudson's Pancakes Categories Codeforces Codeforces Round #110 (Div. 1) 10
483 Toys Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 10
484 Wavy numbers Categories Codeforces Codeforces Round #273 (Div. 2) 10
485 Lift and Throw Categories Codeforces Codeforces Beta Round #81 10
486 Two Circles Categories Codeforces Codeforces Round #211 (Div. 2) 10
487 To Hack or not to Hack Categories Codeforces CROC 2016 - Final Round [Private, For Onsite Finalists Only] 10
488 Lucky Interval Categories Codeforces Codeforces Beta Round #84 (Div. 1 Only) 10
489 The Overdosing Ubiquity Categories Codeforces Codeforces Round #439 (Div. 2) 10
490 Entertaining Geodetics Categories Codeforces Codeforces Beta Round #81 10
491 Pills Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) 10
492 Banners Categories Codeforces Zepto Code Rush 2014 10
493 Party Categories Codeforces Bubble Cup 8 - Finals [Online Mirror] 10