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constructive algorithms problems
Problem Name Online Judge Contest Difficulty Level
1 Anton and Letters Categories Codeforces Codeforces Round #253 (Div. 2) 1
2 Exam Categories Codeforces Codeforces Round #298 (Div. 2) 1
3 Chris and Magic Square Categories Codeforces Codeforces Round #369 (Div. 2) 1
4 Present from Lena Categories Codeforces Codeforces Beta Round #89 (Div. 2) 1
5 Mike and palindrome Categories Codeforces Codeforces Round #410 (Div. 2) 1
6 Diverse Permutation Categories Codeforces Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2) 1
7 Team Categories Codeforces Codeforces Round #235 (Div. 2) 1
8 Hexadecimal's theorem Categories Codeforces Codeforces Round #125 (Div. 2) 1
9 Fraction Categories Codeforces Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises) 1
10 Game Categories Codeforces Rockethon 2015 1
11 Alyona and Numbers Categories Codeforces Codeforces Round #358 (Div. 2) 1
12 Before an Exam Categories Codeforces Codeforces Beta Round #4 (Div. 2 Only) 1
13 Mahmoud and Longest Uncommon Subsequence Categories Codeforces Codeforces Round #396 (Div. 2) 1
14 Lucky Sum of Digits Categories Codeforces Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only) 1
15 Bear and Finding Criminals Categories Codeforces Codeforces Round #356 (Div. 2) 1
16 Shell Game Categories Codeforces Codeforces Round #401 (Div. 2) 1
17 Quasi Binary Categories Codeforces Codeforces Round #300 1
18 Fedor and New Game Categories Codeforces Codeforces Round #267 (Div. 2) 1
19 Different is Good Categories Codeforces Codeforces Round #352 (Div. 2) 1
20 Lovely Palindromes Categories Codeforces Codeforces Round #360 (Div. 2) 1
21 Chloe and the sequence Categories Codeforces Codeforces Round #384 (Div. 2) 1
22 Bear and Five Cards Categories Codeforces Codeforces Round #356 (Div. 2) 1
23 Timofey and cubes Categories Codeforces Codeforces Round #395 (Div. 2) 1
24 Array Categories Codeforces Codeforces Round #181 (Div. 2) 1
25 Simple Game Categories Codeforces Codeforces Round #316 (Div. 2) 1
26 Mahmoud and a Triangle Categories Codeforces Codeforces Round #396 (Div. 2) 1
27 Queue at the School Categories Codeforces Codeforces Round #163 (Div. 2) 1
28 Free Ice Cream Categories Codeforces Codeforces Round #359 (Div. 2) 1
29 Random Teams Categories Codeforces Codeforces Round #273 (Div. 2) 1
30 Insomnia cure Categories Codeforces Codeforces Round #105 (Div. 2) 1
31 Vladik and flights Categories Codeforces Codeforces Round #384 (Div. 2) 1
32 Far Relative’s Birthday Cake Categories Codeforces Codeforces Round #343 (Div. 2) 1
33 Road Construction Categories Codeforces Codeforces Round #192 (Div. 2) 1
34 Little Robber Girl's Zoo Categories Codeforces Codeforces Round #359 (Div. 2) 2
35 Replacement Categories Codeforces Codeforces Round #316 (Div. 2) 2
36 New Year Present Categories Codeforces Good Bye 2013 2
37 War of the Corporations Categories Codeforces Codeforces Round #342 (Div. 2) 2
38 New Year Book Reading Categories Codeforces Good Bye 2014 2
39 Bear and Prime 100 Categories Codeforces Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) 2
40 Gerald is into Art Categories Codeforces Codeforces Round #313 (Div. 2) 2
41 Parallelogram is Back Categories Codeforces Codeforces Round #388 (Div. 2) 2
42 Print Check Categories Codeforces Codeforces Round #344 (Div. 2) 2
43 Guess the Permutation Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 2
44 Buggy Sorting Categories Codeforces Codeforces Round #151 (Div. 2) 2
45 Beautiful Sets of Points Categories Codeforces Codeforces Round #164 (Div. 2) 2
46 K-special Tables Categories Codeforces Codeforces Round #342 (Div. 2) 2
47 Bear and Forgotten Tree 3 Categories Codeforces VK Cup 2016 - Round 1 2
48 Alyona and flowers Categories Codeforces Codeforces Round #381 (Div. 2) 2
49 Vasya and Chess Categories Codeforces Codeforces Round #281 (Div. 2) 2
50 Lesha and array splitting Categories Codeforces Codeforces Round #390 (Div. 2) 2
51 Painting Pebbles Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 2
52 Bits Categories Codeforces Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2) 2
53 Valera and Tubes Categories Codeforces Codeforces Round #252 (Div. 2) 2
54 Sea and Islands Categories Codeforces Codeforces Round #302 (Div. 2) 2
55 Mashmokh and Numbers Categories Codeforces Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2) 2
56 Vasya and Digital Root Categories Codeforces Codeforces Round #206 (Div. 2) 2
57 Escape from Stones Categories Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 2
58 An express train to reveries Categories Codeforces Codeforces Round #418 (Div. 2) 2
59 Sorting Railway Cars Categories Codeforces Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2) 2
60 Plus and Square Root Categories Codeforces Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2) 2
61 24 Game Categories Codeforces Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2) 2
62 Restoring Painting Categories Codeforces Codeforces Round #353 (Div. 2) 2
63 GCD Table Categories Codeforces Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2) 2
64 Soldier and Number Game Categories Codeforces Codeforces Round #304 (Div. 2) 2
65 Removing Columns Categories Codeforces Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1) 2
66 Vladik and fractions Categories Codeforces Codeforces Round #384 (Div. 2) 2
67 Maxim Buys an Apartment Categories Codeforces Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises) 2
68 Cumulative Sum Query Categories SPOJ 2
69 Alyona and mex Categories Codeforces Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2) 2
70 Valued Keys Categories Codeforces Codeforces Round #409 (rated, Div. 2, based on VK Cup 2017 Round 2) 2
71 Levko and Table Categories Codeforces Codeforces Round #210 (Div. 2) 2
72 Marina and Vasya Categories Codeforces Codeforces Round #324 (Div. 2) 3
73 Cows and Sequence Categories Codeforces Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) 3
74 Pashmak and Buses Categories Codeforces Codeforces Round #261 (Div. 2) 3
75 Xenia and Weights Categories Codeforces Codeforces Round #197 (Div. 2) 3
76 Ilya and Matrix Categories Codeforces Codeforces Round #186 (Div. 2) 3
77 From Y to Y Categories Codeforces Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2) 3
78 Levko and Permutation Categories Codeforces Codeforces Round #210 (Div. 2) 3
79 Searching for Graph Categories Codeforces Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) 3
80 Lucky Permutation Triple Categories Codeforces Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2) 3
81 Flag Day Categories Codeforces Codeforces Round #207 (Div. 2) 3
82 Little Elephant and Array Categories Codeforces Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2) 3
83 Mike and Cellphone Categories Codeforces Codeforces Round #361 (Div. 2) 3
84 Misha and Forest Categories Codeforces Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1) 3
85 Interesting Array Categories Codeforces Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2) 3
86 Purification Categories Codeforces Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2) 3
87 Coat of Anticubism Categories Codeforces Codeforces Round #349 (Div. 2) 3
88 Increasing Sequence Categories Codeforces Codeforces Beta Round #11 3
89 Valera and Contest Categories Codeforces Codeforces Round #216 (Div. 2) 3
90 A + B Strikes Back Categories Codeforces April Fools Day Contest 2014 3
91 A Trivial Problem Categories Codeforces Manthan, Codefest 16 3
92 Longest Regular Bracket Sequence Categories Codeforces Codeforces Beta Round #5 3
93 Dice Tower Categories Codeforces Codeforces Round #139 (Div. 2) 3
94 Secret Combination Categories Codeforces Codeforces Round #283 (Div. 2) 3
95 Cards with Numbers Categories Codeforces Codeforces Round #155 (Div. 2) 3
96 Kalevitch and Chess Categories Codeforces Codeforces Beta Round #7 3
97 Mister B and Angle in Polygon Categories Codeforces Codeforces Round #421 (Div. 2) 3
98 Cards Categories Codeforces 8VC Venture Cup 2016 - Elimination Round 3
99 Parliament of Berland Categories Codeforces CROC 2016 - Qualification 3
100 Permutation Categories Codeforces Codeforces Round #209 (Div. 2) 3
101 Football Categories Codeforces RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1) 3
102 XOR and OR Categories Codeforces Codeforces Round #173 (Div. 2) 3
103 Easter Eggs Categories Codeforces Codeforces Beta Round #70 (Div. 2) 3
104 Lucky String Categories Codeforces Codeforces Beta Round #84 (Div. 2 Only) 3
105 Graph and String Categories Codeforces AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2) 3
106 Short Program Categories Codeforces Codeforces Round #443 (Div. 1) & Codeforces Round #443 (Div. 2) 3
107 Polyline Categories Codeforces Codeforces Round #340 (Div. 2) 3
108 Yaroslav and Sequence Categories Codeforces Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2) 4
109 Mountain Scenery Categories Codeforces Codeforces Round #134 (Div. 2) 4
110 Home Numbers Categories Codeforces VK Cup 2016 - Qualification Round 2 4
111 Harmony Analysis Categories Codeforces Codeforces Round #337 (Div. 2) 4
112 Fish Weight Categories Codeforces Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2) 4
113 Toy Sum Categories Codeforces Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) 4
114 Ciel the Commander Categories Codeforces Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) 4
115 Hometask Categories Codeforces Codeforces Round #131 (Div. 2) 4
116 Tree Requests Categories Codeforces Codeforces Round #316 (Div. 2) 4
117 Regular Bridge Categories Codeforces Codeforces Round #306 (Div. 2) 4
118 Pasha and Hamsters Categories Codeforces Coder-Strike 2014 - Finals (online edition, Div. 2) 4
119 Lucky Permutation Categories Codeforces Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2) 4
120 Devu and Partitioning of the Array Categories Codeforces Codeforces Round #251 (Div. 2) 4
121 Alice, Bob, Two Teams Categories Codeforces Educational Codeforces Round 9 4
122 Marco and GCD Sequence Categories Codeforces Codeforces Round #447 (Div. 2) 4
123 Magic, Wizardry and Wonders Categories Codeforces Codeforces Round #143 (Div. 2) 4
124 Strange Addition Categories Codeforces Codeforces Round #184 (Div. 2) 4
125 Little Artem and Dance Categories Codeforces VK Cup 2016 - Round 2 4
126 Mysterious numbers - 1 Categories Codeforces April Fools Day Contest 4
127 Three Logos Categories Codeforces Codeforces Round #322 (Div. 2) 4
128 Rebus Categories Codeforces Codeforces Round #347 (Div. 1) & Codeforces Round #347 (Div. 2) 4
129 Drazil and Tiles Categories Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 4
130 Island Puzzle Categories Codeforces 8VC Venture Cup 2016 - Final Round (Div. 1 Edition) & 8VC Venture Cup 2016 - Final Round (Div. 2 Edition) 4
131 Dreamoon and Sets Categories Codeforces Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1) 4
132 ZgukistringZ Categories Codeforces Codeforces Round #307 (Div. 2) 4
133 Plate Game Categories Codeforces Codeforces Round #124 (Div. 2) 4
134 Secret Categories Codeforces Codeforces Round #166 (Div. 2) 4
135 Weird Chess Categories Codeforces Codeforces Round #300 4
136 Little Frog Categories Codeforces Codeforces Beta Round #49 (Div. 2) 4
137 Promocodes with Mistakes Categories Codeforces VK Cup 2016 - Qualification Round 1 4
138 Lazy Student Categories Codeforces Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2) 4
139 Parity Game Categories Codeforces Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2) 4
140 The Closest Pair Categories Codeforces Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) 4
141 Amity Assessment Categories Codeforces CROC 2016 - Elimination Round 4
142 Stammering Aliens Categories UVA 5
143 Not Wool Sequences Categories Codeforces Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) 5
144 Terse princess Categories Codeforces Codeforces Round #105 (Div. 2) 5
145 Complete The Graph Categories Codeforces Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2) 5
146 Candy Boxes Categories Codeforces Codeforces Round #278 (Div. 2) 5
147 Queue Categories Codeforces Codeforces Round #205 (Div. 2) 5
148 Gluttony Categories Codeforces Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2) 5
149 Handshakes Categories Codeforces Codeforces Round #298 (Div. 2) 5
150 Fox and Minimal path Categories Codeforces Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2) 5
151 Queue Categories Codeforces Codeforces Round #101 (Div. 2) 5
152 Sets Categories Codeforces Yandex.Algorithm 2011 Qualification 2 5
153 Points on Plane Categories Codeforces Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2) 5
154 Discounts Categories Codeforces VK Cup 2012 Round 1 5
155 Clear Symmetry Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 5
156 Convex Shape Categories Codeforces Codeforces Round #168 (Div. 2) 5
157 Beauty Pageant Categories Codeforces Codeforces Round #151 (Div. 2) 5
158 Petya and His Friends Categories Codeforces Codeforces Beta Round #61 (Div. 2) 5
159 4-point polyline Categories Codeforces MemSQL Start[c]UP 2.0 - Round 1 5
160 Domino Categories Codeforces Yandex.Algorithm 2011 Round 1 5
161 Find Color Categories Codeforces Codeforces Beta Round #39 5
162 Help General Categories Codeforces Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) 5
163 Optimal Number Permutation Categories Codeforces Educational Codeforces Round 7 5
164 Cycles Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 5
165 Unordered Subsequence Categories Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 5
166 Lucky Number 2 Categories Codeforces Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2) 5
167 Timofey and rectangles Categories Codeforces Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2) 5
168 Four Segments Categories Codeforces Codeforces Beta Round #14 (Div. 2) 5
169 Simple Subset Categories Codeforces Educational Codeforces Round 12 5
170 Correcting Mistakes Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 5
171 Suspects Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 5
172 Tablecity Categories Codeforces Bubble Cup 8 - Finals [Online Mirror] 5
173 Block Tower Categories Codeforces Codeforces Round #191 (Div. 2) 5
174 Kyoya and Permutation Categories Codeforces Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) 5
175 Points and Segments (easy) Categories Codeforces Codeforces Round #245 (Div. 2) 5
176 Obsession with Robots Categories Codeforces Codeforces Beta Round #8 5
177 Restoring Table Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 5
178 Two Heaps Categories Codeforces Codeforces Round #205 (Div. 2) 5
179 Maxim and Array Categories Codeforces Codeforces Round #374 (Div. 2) 5
180 Leha and another game about graph Categories Codeforces Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) 6
181 Party Categories Codeforces Codeforces Beta Round #23 6
182 Mathematical Analysis Rocks! Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 6
183 Looksery Party Categories Codeforces Looksery Cup 2015 6
184 Zero-One Categories Codeforces Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2) 6
185 Palindrome Categories Codeforces MemSQL start[c]up Round 2 - online version 6
186 Below the Diagonal Categories Codeforces Codeforces Round #163 (Div. 2) 6
187 Invariance of Tree Categories Codeforces Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2) 6
188 String Categories Codeforces Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only) 6
189 Vladik and Favorite Game Categories Codeforces Codeforces Round #416 (Div. 2) 6
190 Anton and Ira Categories Codeforces Codeforces Round #324 (Div. 2) 6
191 Jzzhu and Apples Categories Codeforces Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2) 6
192 Mike and distribution Categories Codeforces Codeforces Round #410 (Div. 2) 6
193 Karen and Test Categories Codeforces Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) 6
194 International Olympiad Categories Codeforces CROC 2016 - Final Round [Private, For Onsite Finalists Only] 6
195 Rooter's Song Categories Codeforces Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2) 6
196 Brackets in Implications Categories Codeforces Codeforces Round #306 (Div. 2) 6
197 Dima and Containers Categories Codeforces Codeforces Round #208 (Div. 2) 6
198 Flawed Flow Categories Codeforces Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2) 6
199 Mahmoud and a xor trip Categories Codeforces Codeforces Round #396 (Div. 2) 6
200 Searching Rectangles Categories Codeforces Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2) 6
201 Mittens Categories Codeforces Codeforces Round #217 (Div. 2) 6
202 Little Pony and Summer Sun Celebration Categories Codeforces Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) 6
203 Dispute Categories Codeforces Codeforces Round #149 (Div. 2) 6
204 3-cycles Categories Codeforces Codeforces Beta Round #40 (Div. 2) 6
205 Banana Categories Codeforces MemSQL start[c]up Round 2 - online version 6
206 Compartments Categories Codeforces Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2) 6
207 Arpa’s overnight party and Mehrdad’s silent entering Categories Codeforces Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2) 6
208 Ant on the Tree Categories Codeforces Codeforces Beta Round #29 (Div. 2, Codeforces format) 6
209 Practice Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) 6
210 Prefix Product Sequence Categories Codeforces Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) 6
211 Square Table Categories Codeforces RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1) 7
212 Axis Walking Categories Codeforces Codeforces Round #191 (Div. 2) 7
213 Dima and Horses Categories Codeforces Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1) 7
214 Idempotent functions Categories Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 7
215 Black and White Tree Categories Codeforces Codeforces Round #158 (Div. 2) 7
216 Russian Roulette Categories Codeforces Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only) 7
217 Before Exam Categories Codeforces Codeforces Beta Round #90 7
218 Little Victor and Set Categories Codeforces Codeforces Round #262 (Div. 2) 7
219 Boring Partition Categories Codeforces Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) 7
220 Splitting the Uniqueness Categories Codeforces Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2) 7
221 Numbers Categories Codeforces Codeforces Beta Round #94 (Div. 1 Only) 7
222 Lucky Number Representation Categories Codeforces Codeforces Round #206 (Div. 1) 7
223 Maxim and Matrix Categories Codeforces Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2) 7
224 Journey Categories Codeforces Codeforces Beta Round #42 (Div. 2) 7
225 Kamal-ol-molk's Painting Categories Codeforces Bayan 2015 Contest Warm Up 7
226 Hobbits' Party Categories Codeforces Codeforces Testing Round #2 7
227 Square Root of Permutation Categories Codeforces Educational Codeforces Round 4 7
228 Graph Reconstruction Categories Codeforces Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2) 7
229 Disposition Categories Codeforces Codeforces Beta Round #46 (Div. 2) 7
230 Set of Points Categories Codeforces Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2) 7
231 Bear and Drawing Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 7
232 Guess the Tree Categories Codeforces Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2) 7
233 The table Categories Codeforces Codeforces Round #140 (Div. 1) 7
234 Restoring Numbers Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 7
235 Vladik and chat Categories Codeforces Codeforces Round #390 (Div. 2) 7
236 Necklace Categories Codeforces Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2) 7
237 Sign on Fence Categories Codeforces Codeforces Round #276 (Div. 1) 7
238 Wrong Floyd Categories Codeforces Codeforces Round #203 (Div. 2) 7
239 Data Center Drama Categories Codeforces Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) 7
240 Valera and Swaps Categories Codeforces Codeforces Round #252 (Div. 2) 7
241 Hack it! Categories Codeforces Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2) 7
242 Graph Cutting Categories Codeforces Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) 7
243 Safe cracking Categories Codeforces Codeforces Beta Round #41 8
244 Yaroslav and Algorithm Categories Codeforces Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2) 8
245 Bags and Coins Categories Codeforces Codeforces Round #207 (Div. 1) 8
246 Polycarp's Picture Gallery Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 8
247 Planting Trees Categories Codeforces School Team Contest #3 (Winter Computer School 2010/11) 8
248 Square Tiling Categories Codeforces Codeforces Round #246 (Div. 2) 8
249 Greedy Change Categories Codeforces Codeforces Beta Round #10 8
250 Tricky and Clever Password Categories Codeforces Codeforces Beta Round #30 (Codeforces format) 8
251 Dividing Island Categories Codeforces Codeforces Beta Round #59 (Div. 2) 8
252 Oranges and Apples Categories Codeforces Codeforces Beta Round #23 8
253 Headquarters Categories Codeforces Croc Champ 2012 - Final 8
254 Three Swaps Categories Codeforces Codeforces Round #197 (Div. 2) 8
255 Ilya and Two Numbers Categories Codeforces Codeforces Round #186 (Div. 2) 8
256 Double Knapsack Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 8
257 Parquet Categories Codeforces Codeforces Beta Round #26 (Codeforces format) 8
258 CNF 2 Categories Codeforces Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) 8
259 Black-and-White Cube Categories Codeforces Testing Round #7 8
260 Inna and Sweet Matrix Categories Codeforces Codeforces Round #229 (Div. 2) 8
261 Biathlon Track Categories Codeforces Codeforces Round #242 (Div. 2) 8
262 Ladies' Shop Categories Codeforces Codeforces Round #176 (Div. 1) 8
263 Clearing Up Categories Codeforces Codeforces Round #101 (Div. 2) 8
264 Hamming Distance Categories Codeforces Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2) 8
265 Finals in arithmetic Categories Codeforces Codeforces Round #342 (Div. 2) 8
266 Challenging Balloons Categories Codeforces Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) 8
267 Start of the session Categories Codeforces Codeforces Beta Round #12 (Div 2 Only) 8
268 Constants in the language of Shakespeare Categories Codeforces Codeforces Beta Round #96 (Div. 1) 8
269 Lucky Sorting Categories Codeforces Codeforces Beta Round #84 (Div. 1 Only) 8
270 Triminoes Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 8
271 Dominoes Categories Codeforces Codeforces Round #231 (Div. 2) 8
272 Superset Categories Codeforces Yandex.Algorithm 2011 Finals 8
273 Balance Categories Codeforces Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2) 8
274 Trails and Glades Categories Codeforces VK Cup 2012 Finals, Practice Session 8
275 Playing with Superglue Categories Codeforces Croc Champ 2012 - Round 2 8
276 Broken Monitor Categories Codeforces Codeforces Round #217 (Div. 2) 8
277 Swaps Categories Codeforces Codeforces Testing Round #3 8
278 Director Categories Codeforces School Team Contest #3 (Winter Computer School 2010/11) 8
279 Three Horses Categories Codeforces Codeforces Round #166 (Div. 2) 8
280 E-reader Display Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) 8
281 Team Arrangement Categories Codeforces Codeforces Beta Round #55 (Div. 2) 8
282 Merging Two Decks Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) 8
283 Stars Categories Codeforces Codeforces Round #131 (Div. 1) 9
284 Mike and code of a permutation Categories Codeforces Codeforces Round #410 (Div. 2) 9
285 Strange town Categories Codeforces Codeforces Beta Round #41 9
286 Design Tutorial: Change the Goal Categories Codeforces Codeforces Round #270 9
287 Berland Local Positioning System Categories Codeforces Codeforces Round #298 (Div. 2) 9
288 Walking! Categories Codeforces Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] 9
289 Two Paths Categories Codeforces Codeforces Beta Round #36 9
290 Replicating Processes Categories Codeforces VK Cup 2015 - Finals, online mirror 9
291 Constrained Tree Categories Codeforces Rockethon 2015 9
292 Grocer's Problem Categories Codeforces Codeforces Beta Round #75 (Div. 1 Only) 9
293 Beautiful Function Categories Codeforces Codeforces Round #329 (Div. 2) 9
294 Multithreading Categories Codeforces Codeforces Beta Round #26 (Codeforces format) 9
295 Mister B and Flight to the Moon Categories Codeforces Codeforces Round #421 (Div. 1) 9
296 Tetris revisited Categories Codeforces Yandex.Algorithm 2011 Round 2 9
297 Candies Game Categories Codeforces Codeforces Round #198 (Div. 1) 9
298 Color the Carpet Categories Codeforces Codeforces Round #180 (Div. 1) 9
299 Pixels Categories Codeforces VK Cup 2012 Finals, Practice Session 9
300 Deputies Categories Codeforces Croc Champ 2012 - Round 1 9
301 Lucky Tickets Categories Codeforces Codeforces Round #194 (Div. 1) & Codeforces Round #194 (Div. 2) 9
302 Tournament-graph Categories Codeforces Testing Round #7 9
303 Parquet Re-laying Categories Codeforces Codeforces Round #402 (Div. 1) 9
304 Two progressions Categories Codeforces Codeforces Testing Round #2 9
305 The Evil Temple and the Moving Rocks Categories Codeforces Codeforces Round #192 (Div. 1) 9
306 Tree and Array Categories Codeforces Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2) 9
307 Fox And Polygon Categories Codeforces Codeforces Round #290 (Div. 1) 9
308 Princess and Her Shadow Categories Codeforces Codeforces Round #188 (Div. 1) 10
309 Chess Championship Categories Codeforces Codeforces Round #382 (Div. 1) 10
310 Ants on a Circle Categories Codeforces Educational Codeforces Round 10 10
311 Design Tutorial: Learn from a Game Categories Codeforces Codeforces Round #270 10
312 Deja Vu Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 10
313 Karen and Neighborhood Categories Codeforces Codeforces Round #419 (Div. 1) 10
314 Black and White Categories Codeforces School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) 10
315 New Year and Forgotten Tree Categories Codeforces Good Bye 2015 10
316 Dynamic Programming Categories A2 Online Judge 10
317 Perpetual Motion Machine Categories Codeforces Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) 10
318 Listening to Music Categories Codeforces Codeforces Round #302 (Div. 1) 10
319 Deja Vu Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 10
320 Suns and Rays Categories Codeforces ABBYY Cup 3.0 10
321 Restoring Map Categories Codeforces VK Cup 2015 - Finals, online mirror 10
322 Create a Maze Categories Codeforces Codeforces Round #372 (Div. 1) 10
323 Shift It! Categories Codeforces Codeforces Beta Round #68 10
324 HQ Categories Codeforces April Fools Day Contest 2013 10
325 Polygon Categories Codeforces Testing Round #6 10
326 Finding lines Categories Codeforces Codeforces Round #407 (Div. 1) 10
327 Doe Graphs Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 10
328 Flow Optimality Categories Codeforces MemSQL Start[c]UP 2.0 - Round 2 10
329 Cube Snake Categories Codeforces Codeforces Round #125 (Div. 1) 10
330 Berserk Robot Categories Codeforces Codeforces Round #300 10
331 Help Monks Categories Codeforces Codeforces Beta Round #78 (Div. 1 Only) 10