Problem Name | Online Judge | Contest | Difficulty Level | |
---|---|---|---|---|

1 | Hexadecimal's theorem | Codeforces | Codeforces Round #125 (Div. 2) | 1 |

2 | Insomnia cure | Codeforces | Codeforces Round #105 (Div. 2) | 1 |

3 | Present from Lena | Codeforces | Codeforces Beta Round #89 (Div. 2) | 1 |

4 | Lucky Sum of Digits | Codeforces | Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only) | 1 |

5 | Before an Exam | Codeforces | Codeforces Beta Round #4 (Div. 2 Only) | 1 |

6 | Far Relative’s Birthday Cake | Codeforces | Codeforces Round #343 (Div. 2) | 1 |

7 | Simple Game | Codeforces | Codeforces Round #316 (Div. 2) | 1 |

8 | Quasi Binary | Codeforces | Codeforces Round #300 | 1 |

9 | Exam | Codeforces | Codeforces Round #298 (Div. 2) | 1 |

10 | Game | Codeforces | Rockethon 2015 | 1 |

11 | Diverse Permutation | Codeforces | Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2) | 1 |

12 | Random Teams | Codeforces | Codeforces Round #273 (Div. 2) | 1 |

13 | Fedor and New Game | Codeforces | Codeforces Round #267 (Div. 2) | 1 |

14 | Anton and Letters | Codeforces | Codeforces Round #253 (Div. 2) | 1 |

15 | Team | Codeforces | Codeforces Round #235 (Div. 2) | 1 |

16 | Road Construction | Codeforces | Codeforces Round #192 (Div. 2) | 1 |

17 | Array | Codeforces | Codeforces Round #181 (Div. 2) | 1 |

18 | Queue at the School | Codeforces | Codeforces Round #163 (Div. 2) | 1 |

19 | Different is Good | Codeforces | Codeforces Round #352 (Div. 2) | 1 |

20 | Free Ice Cream | Codeforces | Codeforces Round #359 (Div. 2) | 1 |

21 | Bear and Five Cards | Codeforces | Codeforces Round #356 (Div. 2) | 1 |

22 | Bear and Finding Criminals | Codeforces | Codeforces Round #356 (Div. 2) | 1 |

23 | Alyona and Numbers | Codeforces | Codeforces Round #358 (Div. 2) | 1 |

24 | Lovely Palindromes | Codeforces | Codeforces Round #360 (Div. 2) | 1 |

25 | Fraction | Codeforces | Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises) | 1 |

26 | Timofey and cubes | Codeforces | Codeforces Round #395 (Div. 2) | 1 |

27 | Shell Game | Codeforces | Codeforces Round #401 (Div. 2) | 1 |

28 | Mahmoud and Longest Uncommon Subsequence | Codeforces | Codeforces Round #396 (Div. 2) | 1 |

29 | Mike and palindrome | Codeforces | Codeforces Round #410 (Div. 2) | 1 |

30 | Mahmoud and a Triangle | Codeforces | Codeforces Round #396 (Div. 2) | 1 |

31 | Chloe and the sequence | Codeforces | Codeforces Round #384 (Div. 2) | 1 |

32 | Vladik and flights | Codeforces | Codeforces Round #384 (Div. 2) | 1 |

33 | Chris and Magic Square | Codeforces | Codeforces Round #369 (Div. 2) | 1 |

34 | Buggy Sorting | Codeforces | Codeforces Round #151 (Div. 2) | 2 |

35 | Bear and Forgotten Tree 3 | Codeforces | VK Cup 2016 - Round 1 | 2 |

36 | Print Check | Codeforces | Codeforces Round #344 (Div. 2) | 2 |

37 | K-special Tables | Codeforces | Codeforces Round #342 (Div. 2) | 2 |

38 | War of the Corporations | Codeforces | Codeforces Round #342 (Div. 2) | 2 |

39 | Guess the Permutation | Codeforces | Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) | 2 |

40 | Sorting Railway Cars | Codeforces | Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2) | 2 |

41 | GCD Table | Codeforces | Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2) | 2 |

42 | Replacement | Codeforces | Codeforces Round #316 (Div. 2) | 2 |

43 | Gerald is into Art | Codeforces | Codeforces Round #313 (Div. 2) | 2 |

44 | Soldier and Number Game | Codeforces | Codeforces Round #304 (Div. 2) | 2 |

45 | Sea and Islands | Codeforces | Codeforces Round #302 (Div. 2) | 2 |

46 | Painting Pebbles | Codeforces | Codeforces Round #289 (Div. 2, ACM ICPC Rules) | 2 |

47 | New Year Book Reading | Codeforces | Good Bye 2014 | 2 |

48 | Removing Columns | Codeforces | Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1) | 2 |

49 | Vasya and Chess | Codeforces | Codeforces Round #281 (Div. 2) | 2 |

50 | Bits | Codeforces | Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2) | 2 |

51 | 24 Game | Codeforces | Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2) | 2 |

52 | Valera and Tubes | Codeforces | Codeforces Round #252 (Div. 2) | 2 |

53 | Mashmokh and Numbers | Codeforces | Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2) | 2 |

54 | New Year Present | Codeforces | Good Bye 2013 | 2 |

55 | Levko and Table | Codeforces | Codeforces Round #210 (Div. 2) | 2 |

56 | Vasya and Digital Root | Codeforces | Codeforces Round #206 (Div. 2) | 2 |

57 | Beautiful Sets of Points | Codeforces | Codeforces Round #164 (Div. 2) | 2 |

58 | Escape from Stones | Codeforces | Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) | 2 |

59 | Bear and Prime 100 | Codeforces | Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) | 2 |

60 | Little Robber Girl's Zoo | Codeforces | Codeforces Round #359 (Div. 2) | 2 |

61 | Restoring Painting | Codeforces | Codeforces Round #353 (Div. 2) | 2 |

62 | Alyona and mex | Codeforces | Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2) | 2 |

63 | Plus and Square Root | Codeforces | Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2) | 2 |

64 | Valued Keys | Codeforces | Codeforces Round #409 (rated, Div. 2, based on VK Cup 2017 Round 2) | 2 |

65 | Maxim Buys an Apartment | Codeforces | Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises) | 2 |

66 | Alyona and flowers | Codeforces | Codeforces Round #381 (Div. 2) | 2 |

67 | Parallelogram is Back | Codeforces | Codeforces Round #388 (Div. 2) | 2 |

68 | Lesha and array splitting | Codeforces | Codeforces Round #390 (Div. 2) | 2 |

69 | Vladik and fractions | Codeforces | Codeforces Round #384 (Div. 2) | 2 |

70 | An express train to reveries | Codeforces | Codeforces Round #418 (Div. 2) | 2 |

71 | Cumulative Sum Query | SPOJ | 2 | |

72 | Cards with Numbers | Codeforces | Codeforces Round #155 (Div. 2) | 3 |

73 | Lucky String | Codeforces | Codeforces Beta Round #84 (Div. 2 Only) | 3 |

74 | Easter Eggs | Codeforces | Codeforces Beta Round #70 (Div. 2) | 3 |

75 | Increasing Sequence | Codeforces | Codeforces Beta Round #11 | 3 |

76 | Kalevitch and Chess | Codeforces | Codeforces Beta Round #7 | 3 |

77 | Longest Regular Bracket Sequence | Codeforces | Codeforces Beta Round #5 | 3 |

78 | Parliament of Berland | Codeforces | CROC 2016 - Qualification | 3 |

79 | A Trivial Problem | Codeforces | Manthan, Codefest 16 | 3 |

80 | Cards | Codeforces | 8VC Venture Cup 2016 - Elimination Round | 3 |

81 | Graph and String | Codeforces | AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2) | 3 |

82 | Polyline | Codeforces | Codeforces Round #340 (Div. 2) | 3 |

83 | Marina and Vasya | Codeforces | Codeforces Round #324 (Div. 2) | 3 |

84 | Misha and Forest | Codeforces | Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1) | 3 |

85 | Secret Combination | Codeforces | Codeforces Round #283 (Div. 2) | 3 |

86 | Interesting Array | Codeforces | Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2) | 3 |

87 | Pashmak and Buses | Codeforces | Codeforces Round #261 (Div. 2) | 3 |

88 | Football | Codeforces | RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1) | 3 |

89 | A + B Strikes Back | Codeforces | April Fools Day Contest 2014 | 3 |

90 | Searching for Graph | Codeforces | Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) | 3 |

91 | Valera and Contest | Codeforces | Codeforces Round #216 (Div. 2) | 3 |

92 | Levko and Permutation | Codeforces | Codeforces Round #210 (Div. 2) | 3 |

93 | Permutation | Codeforces | Codeforces Round #209 (Div. 2) | 3 |

94 | Flag Day | Codeforces | Codeforces Round #207 (Div. 2) | 3 |

95 | Xenia and Weights | Codeforces | Codeforces Round #197 (Div. 2) | 3 |

96 | Purification | Codeforces | Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2) | 3 |

97 | Ilya and Matrix | Codeforces | Codeforces Round #186 (Div. 2) | 3 |

98 | Lucky Permutation Triple | Codeforces | Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2) | 3 |

99 | Cows and Sequence | Codeforces | Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) | 3 |

100 | XOR and OR | Codeforces | Codeforces Round #173 (Div. 2) | 3 |

101 | Dice Tower | Codeforces | Codeforces Round #139 (Div. 2) | 3 |

102 | Little Elephant and Array | Codeforces | Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2) | 3 |

103 | Coat of Anticubism | Codeforces | Codeforces Round #349 (Div. 2) | 3 |

104 | From Y to Y | Codeforces | Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2) | 3 |

105 | Short Program | Codeforces | Codeforces Round #443 (Div. 1) & Codeforces Round #443 (Div. 2) | 3 |

106 | Mister B and Angle in Polygon | Codeforces | Codeforces Round #421 (Div. 2) | 3 |

107 | Mike and Cellphone | Codeforces | Codeforces Round #361 (Div. 2) | 3 |

108 | Magic, Wizardry and Wonders | Codeforces | Codeforces Round #143 (Div. 2) | 4 |

109 | Hometask | Codeforces | Codeforces Round #131 (Div. 2) | 4 |

110 | Plate Game | Codeforces | Codeforces Round #124 (Div. 2) | 4 |

111 | Mysterious numbers - 1 | Codeforces | April Fools Day Contest | 4 |

112 | Little Frog | Codeforces | Codeforces Beta Round #49 (Div. 2) | 4 |

113 | Rebus | Codeforces | Codeforces Round #347 (Div. 1) & Codeforces Round #347 (Div. 2) | 4 |

114 | Amity Assessment | Codeforces | CROC 2016 - Elimination Round | 4 |

115 | Little Artem and Dance | Codeforces | VK Cup 2016 - Round 2 | 4 |

116 | Home Numbers | Codeforces | VK Cup 2016 - Qualification Round 2 | 4 |

117 | Promocodes with Mistakes | Codeforces | VK Cup 2016 - Qualification Round 1 | 4 |

118 | Island Puzzle | Codeforces | 8VC Venture Cup 2016 - Final Round (Div. 1 Edition) & 8VC Venture Cup 2016 - Final Round (Div. 2 Edition) | 4 |

119 | Alice, Bob, Two Teams | Codeforces | Educational Codeforces Round 9 | 4 |

120 | Harmony Analysis | Codeforces | Codeforces Round #337 (Div. 2) | 4 |

121 | Lazy Student | Codeforces | Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2) | 4 |

122 | Three Logos | Codeforces | Codeforces Round #322 (Div. 2) | 4 |

123 | Tree Requests | Codeforces | Codeforces Round #316 (Div. 2) | 4 |

124 | ZgukistringZ | Codeforces | Codeforces Round #307 (Div. 2) | 4 |

125 | Regular Bridge | Codeforces | Codeforces Round #306 (Div. 2) | 4 |

126 | Weird Chess | Codeforces | Codeforces Round #300 | 4 |

127 | Drazil and Tiles | Codeforces | Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) | 4 |

128 | Dreamoon and Sets | Codeforces | Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1) | 4 |

129 | Devu and Partitioning of the Array | Codeforces | Codeforces Round #251 (Div. 2) | 4 |

130 | Pasha and Hamsters | Codeforces | Coder-Strike 2014 - Finals (online edition, Div. 2) | 4 |

131 | Ciel the Commander | Codeforces | Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) | 4 |

132 | The Closest Pair | Codeforces | Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) | 4 |

133 | Strange Addition | Codeforces | Codeforces Round #184 (Div. 2) | 4 |

134 | Yaroslav and Sequence | Codeforces | Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2) | 4 |

135 | Fish Weight | Codeforces | Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2) | 4 |

136 | Parity Game | Codeforces | Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2) | 4 |

137 | Lucky Permutation | Codeforces | Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2) | 4 |

138 | Secret | Codeforces | Codeforces Round #166 (Div. 2) | 4 |

139 | Mountain Scenery | Codeforces | Codeforces Round #134 (Div. 2) | 4 |

140 | Toy Sum | Codeforces | Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) | 4 |

141 | Marco and GCD Sequence | Codeforces | Codeforces Round #447 (Div. 2) | 4 |

142 | Beauty Pageant | Codeforces | Codeforces Round #151 (Div. 2) | 5 |

143 | Restoring Table | Codeforces | CROC-MBTU 2012, Elimination Round (ACM-ICPC) | 5 |

144 | Not Wool Sequences | Codeforces | Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) | 5 |

145 | Cycles | Codeforces | Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) | 5 |

146 | Clear Symmetry | Codeforces | Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) | 5 |

147 | Discounts | Codeforces | VK Cup 2012 Round 1 | 5 |

148 | Terse princess | Codeforces | Codeforces Round #105 (Div. 2) | 5 |

149 | Lucky Number 2 | Codeforces | Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2) | 5 |

150 | Queue | Codeforces | Codeforces Round #101 (Div. 2) | 5 |

151 | Domino | Codeforces | Yandex.Algorithm 2011 Round 1 | 5 |

152 | Sets | Codeforces | Yandex.Algorithm 2011 Qualification 2 | 5 |

153 | Petya and His Friends | Codeforces | Codeforces Beta Round #61 (Div. 2) | 5 |

154 | Find Color | Codeforces | Codeforces Beta Round #39 | 5 |

155 | Unordered Subsequence | Codeforces | Codeforces Beta Round #27 (Codeforces format, Div. 2) | 5 |

156 | Four Segments | Codeforces | Codeforces Beta Round #14 (Div. 2) | 5 |

157 | Obsession with Robots | Codeforces | Codeforces Beta Round #8 | 5 |

158 | Stammering Aliens | UVA | 5 | |

159 | Simple Subset | Codeforces | Educational Codeforces Round 12 | 5 |

160 | Optimal Number Permutation | Codeforces | Educational Codeforces Round 7 | 5 |

161 | Points on Plane | Codeforces | Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2) | 5 |

162 | Tablecity | Codeforces | Bubble Cup 8 - Finals [Online Mirror] | 5 |

163 | Kyoya and Permutation | Codeforces | Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) | 5 |

164 | Handshakes | Codeforces | Codeforces Round #298 (Div. 2) | 5 |

165 | Correcting Mistakes | Codeforces | VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) | 5 |

166 | Candy Boxes | Codeforces | Codeforces Round #278 (Div. 2) | 5 |

167 | 4-point polyline | Codeforces | MemSQL Start[c]UP 2.0 - Round 1 | 5 |

168 | Points and Segments (easy) | Codeforces | Codeforces Round #245 (Div. 2) | 5 |

169 | Fox and Minimal path | Codeforces | Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2) | 5 |

170 | Queue | Codeforces | Codeforces Round #205 (Div. 2) | 5 |

171 | Two Heaps | Codeforces | Codeforces Round #205 (Div. 2) | 5 |

172 | Block Tower | Codeforces | Codeforces Round #191 (Div. 2) | 5 |

173 | Convex Shape | Codeforces | Codeforces Round #168 (Div. 2) | 5 |

174 | Suspects | Codeforces | Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) | 5 |

175 | Help General | Codeforces | Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) | 5 |

176 | Gluttony | Codeforces | Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2) | 5 |

177 | Timofey and rectangles | Codeforces | Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2) | 5 |

178 | Complete The Graph | Codeforces | Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2) | 5 |

179 | Maxim and Array | Codeforces | Codeforces Round #374 (Div. 2) | 5 |

180 | Dispute | Codeforces | Codeforces Round #149 (Div. 2) | 6 |

181 | Mathematical Analysis Rocks! | Codeforces | Codeforces Round #116 (Div. 2, ACM-ICPC Rules) | 6 |

182 | Zero-One | Codeforces | Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2) | 6 |

183 | String | Codeforces | Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only) | 6 |

184 | 3-cycles | Codeforces | Codeforces Beta Round #40 (Div. 2) | 6 |

185 | Ant on the Tree | Codeforces | Codeforces Beta Round #29 (Div. 2, Codeforces format) | 6 |

186 | Party | Codeforces | Codeforces Beta Round #23 | 6 |

187 | International Olympiad | Codeforces | CROC 2016 - Final Round [Private, For Onsite Finalists Only] | 6 |

188 | Anton and Ira | Codeforces | Codeforces Round #324 (Div. 2) | 6 |

189 | Invariance of Tree | Codeforces | Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2) | 6 |

190 | Brackets in Implications | Codeforces | Codeforces Round #306 (Div. 2) | 6 |

191 | Looksery Party | Codeforces | Looksery Cup 2015 | 6 |

192 | Prefix Product Sequence | Codeforces | Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) | 6 |

193 | Little Pony and Summer Sun Celebration | Codeforces | Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) | 6 |

194 | Jzzhu and Apples | Codeforces | Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2) | 6 |

195 | Mittens | Codeforces | Codeforces Round #217 (Div. 2) | 6 |

196 | Dima and Containers | Codeforces | Codeforces Round #208 (Div. 2) | 6 |

197 | Compartments | Codeforces | Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2) | 6 |

198 | Palindrome | Codeforces | MemSQL start[c]up Round 2 - online version | 6 |

199 | Banana | Codeforces | MemSQL start[c]up Round 2 - online version | 6 |

200 | Flawed Flow | Codeforces | Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2) | 6 |

201 | Below the Diagonal | Codeforces | Codeforces Round #163 (Div. 2) | 6 |

202 | Practice | Codeforces | Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) | 6 |

203 | Rooter's Song | Codeforces | Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2) | 6 |

204 | Leha and another game about graph | Codeforces | Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) | 6 |

205 | Searching Rectangles | Codeforces | Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2) | 6 |

206 | Karen and Test | Codeforces | Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) | 6 |

207 | Arpa’s overnight party and Mehrdad’s silent entering | Codeforces | Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2) | 6 |

208 | Vladik and Favorite Game | Codeforces | Codeforces Round #416 (Div. 2) | 6 |

209 | Mahmoud and a xor trip | Codeforces | Codeforces Round #396 (Div. 2) | 6 |

210 | Mike and distribution | Codeforces | Codeforces Round #410 (Div. 2) | 6 |

211 | Boring Partition | Codeforces | Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) | 7 |

212 | Numbers | Codeforces | Codeforces Beta Round #94 (Div. 1 Only) | 7 |

213 | Hobbits' Party | Codeforces | Codeforces Testing Round #2 | 7 |

214 | Before Exam | Codeforces | Codeforces Beta Round #90 | 7 |

215 | Russian Roulette | Codeforces | Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only) | 7 |

216 | Disposition | Codeforces | Codeforces Beta Round #46 (Div. 2) | 7 |

217 | Journey | Codeforces | Codeforces Beta Round #42 (Div. 2) | 7 |

218 | Necklace | Codeforces | Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2) | 7 |

219 | Square Root of Permutation | Codeforces | Educational Codeforces Round 4 | 7 |

220 | Bear and Drawing | Codeforces | Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) | 7 |

221 | Idempotent functions | Codeforces | VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) | 7 |

222 | Restoring Numbers | Codeforces | Codeforces Round #289 (Div. 2, ACM ICPC Rules) | 7 |

223 | Sign on Fence | Codeforces | Codeforces Round #276 (Div. 1) | 7 |

224 | Kamal-ol-molk's Painting | Codeforces | Bayan 2015 Contest Warm Up | 7 |

225 | Hack it! | Codeforces | Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2) | 7 |

226 | Little Victor and Set | Codeforces | Codeforces Round #262 (Div. 2) | 7 |

227 | Valera and Swaps | Codeforces | Codeforces Round #252 (Div. 2) | 7 |

228 | Guess the Tree | Codeforces | Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2) | 7 |

229 | Square Table | Codeforces | RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1) | 7 |

230 | Lucky Number Representation | Codeforces | Codeforces Round #206 (Div. 1) | 7 |

231 | Wrong Floyd | Codeforces | Codeforces Round #203 (Div. 2) | 7 |

232 | Graph Reconstruction | Codeforces | Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2) | 7 |

233 | Axis Walking | Codeforces | Codeforces Round #191 (Div. 2) | 7 |

234 | Splitting the Uniqueness | Codeforces | Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2) | 7 |

235 | Set of Points | Codeforces | Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2) | 7 |

236 | Dima and Horses | Codeforces | Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1) | 7 |

237 | Maxim and Matrix | Codeforces | Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2) | 7 |

238 | Black and White Tree | Codeforces | Codeforces Round #158 (Div. 2) | 7 |

239 | The table | Codeforces | Codeforces Round #140 (Div. 1) | 7 |

240 | Graph Cutting | Codeforces | Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) | 7 |

241 | Data Center Drama | Codeforces | Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) | 7 |

242 | Vladik and chat | Codeforces | Codeforces Round #390 (Div. 2) | 7 |

243 | Challenging Balloons | Codeforces | Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) | 8 |

244 | Trails and Glades | Codeforces | VK Cup 2012 Finals, Practice Session | 8 |

245 | Hamming Distance | Codeforces | Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2) | 8 |

246 | Headquarters | Codeforces | Croc Champ 2012 - Final | 8 |

247 | Playing with Superglue | Codeforces | Croc Champ 2012 - Round 2 | 8 |

248 | Clearing Up | Codeforces | Codeforces Round #101 (Div. 2) | 8 |

249 | Swaps | Codeforces | Codeforces Testing Round #3 | 8 |

250 | Constants in the language of Shakespeare | Codeforces | Codeforces Beta Round #96 (Div. 1) | 8 |

251 | E-reader Display | Codeforces | Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) | 8 |

252 | Lucky Sorting | Codeforces | Codeforces Beta Round #84 (Div. 1 Only) | 8 |

253 | Superset | Codeforces | Yandex.Algorithm 2011 Finals | 8 |

254 | Polycarp's Picture Gallery | Codeforces | Yandex.Algorithm Open 2011 Qualification 1 | 8 |

255 | Dividing Island | Codeforces | Codeforces Beta Round #59 (Div. 2) | 8 |

256 | Team Arrangement | Codeforces | Codeforces Beta Round #55 (Div. 2) | 8 |

257 | Planting Trees | Codeforces | School Team Contest #3 (Winter Computer School 2010/11) | 8 |

258 | Director | Codeforces | School Team Contest #3 (Winter Computer School 2010/11) | 8 |

259 | Triminoes | Codeforces | School Team Contest #2 (Winter Computer School 2010/11) | 8 |

260 | Safe cracking | Codeforces | Codeforces Beta Round #41 | 8 |

261 | Tricky and Clever Password | Codeforces | Codeforces Beta Round #30 (Codeforces format) | 8 |

262 | Parquet | Codeforces | Codeforces Beta Round #26 (Codeforces format) | 8 |

263 | Oranges and Apples | Codeforces | Codeforces Beta Round #23 | 8 |

264 | Start of the session | Codeforces | Codeforces Beta Round #12 (Div 2 Only) | 8 |

265 | Greedy Change | Codeforces | Codeforces Beta Round #10 | 8 |

266 | Finals in arithmetic | Codeforces | Codeforces Round #342 (Div. 2) | 8 |

267 | Double Knapsack | Codeforces | Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) | 8 |

268 | CNF 2 | Codeforces | Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) | 8 |

269 | Square Tiling | Codeforces | Codeforces Round #246 (Div. 2) | 8 |

270 | Biathlon Track | Codeforces | Codeforces Round #242 (Div. 2) | 8 |

271 | Dominoes | Codeforces | Codeforces Round #231 (Div. 2) | 8 |

272 | Inna and Sweet Matrix | Codeforces | Codeforces Round #229 (Div. 2) | 8 |

273 | Broken Monitor | Codeforces | Codeforces Round #217 (Div. 2) | 8 |

274 | Bags and Coins | Codeforces | Codeforces Round #207 (Div. 1) | 8 |

275 | Three Swaps | Codeforces | Codeforces Round #197 (Div. 2) | 8 |

276 | Black-and-White Cube | Codeforces | Testing Round #7 | 8 |

277 | Balance | Codeforces | Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2) | 8 |

278 | Ilya and Two Numbers | Codeforces | Codeforces Round #186 (Div. 2) | 8 |

279 | Yaroslav and Algorithm | Codeforces | Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2) | 8 |

280 | Ladies' Shop | Codeforces | Codeforces Round #176 (Div. 1) | 8 |

281 | Three Horses | Codeforces | Codeforces Round #166 (Div. 2) | 8 |

282 | Merging Two Decks | Codeforces | Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) | 8 |

283 | Stars | Codeforces | Codeforces Round #131 (Div. 1) | 9 |

284 | Pixels | Codeforces | VK Cup 2012 Finals, Practice Session | 9 |

285 | Deputies | Codeforces | Croc Champ 2012 - Round 1 | 9 |

286 | Two progressions | Codeforces | Codeforces Testing Round #2 | 9 |

287 | Tetris revisited | Codeforces | Yandex.Algorithm 2011 Round 2 | 9 |

288 | Strange town | Codeforces | Codeforces Beta Round #41 | 9 |

289 | Two Paths | Codeforces | Codeforces Beta Round #36 | 9 |

290 | Multithreading | Codeforces | Codeforces Beta Round #26 (Codeforces format) | 9 |

291 | Beautiful Function | Codeforces | Codeforces Round #329 (Div. 2) | 9 |

292 | Walking! | Codeforces | Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] | 9 |

293 | Replicating Processes | Codeforces | VK Cup 2015 - Finals, online mirror | 9 |

294 | Berland Local Positioning System | Codeforces | Codeforces Round #298 (Div. 2) | 9 |

295 | Constrained Tree | Codeforces | Rockethon 2015 | 9 |

296 | Fox And Polygon | Codeforces | Codeforces Round #290 (Div. 1) | 9 |

297 | Design Tutorial: Change the Goal | Codeforces | Codeforces Round #270 | 9 |

298 | Tree and Array | Codeforces | Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2) | 9 |

299 | Candies Game | Codeforces | Codeforces Round #198 (Div. 1) | 9 |

300 | Lucky Tickets | Codeforces | Codeforces Round #194 (Div. 1) & Codeforces Round #194 (Div. 2) | 9 |

301 | The Evil Temple and the Moving Rocks | Codeforces | Codeforces Round #192 (Div. 1) | 9 |

302 | Tournament-graph | Codeforces | Testing Round #7 | 9 |

303 | Color the Carpet | Codeforces | Codeforces Round #180 (Div. 1) | 9 |

304 | Grocer's Problem | Codeforces | Codeforces Beta Round #75 (Div. 1 Only) | 9 |

305 | Parquet Re-laying | Codeforces | Codeforces Round #402 (Div. 1) | 9 |

306 | Mister B and Flight to the Moon | Codeforces | Codeforces Round #421 (Div. 1) | 9 |

307 | Mike and code of a permutation | Codeforces | Codeforces Round #410 (Div. 2) | 9 |

308 | Doe Graphs | Codeforces | Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) | 10 |

309 | Cube Snake | Codeforces | Codeforces Round #125 (Div. 1) | 10 |

310 | Help Monks | Codeforces | Codeforces Beta Round #78 (Div. 1 Only) | 10 |

311 | Shift It! | Codeforces | Codeforces Beta Round #68 | 10 |

312 | Black and White | Codeforces | School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) | 10 |

313 | Ants on a Circle | Codeforces | Educational Codeforces Round 10 | 10 |

314 | New Year and Forgotten Tree | Codeforces | Good Bye 2015 | 10 |

315 | Restoring Map | Codeforces | VK Cup 2015 - Finals, online mirror | 10 |

316 | Listening to Music | Codeforces | Codeforces Round #302 (Div. 1) | 10 |

317 | Berserk Robot | Codeforces | Codeforces Round #300 | 10 |

318 | Design Tutorial: Learn from a Game | Codeforces | Codeforces Round #270 | 10 |

319 | Flow Optimality | Codeforces | MemSQL Start[c]UP 2.0 - Round 2 | 10 |

320 | Deja Vu | Codeforces | ABBYY Cup 3.0 - Finals (online version) | 10 |

321 | Deja Vu | Codeforces | ABBYY Cup 3.0 - Finals (online version) | 10 |

322 | Princess and Her Shadow | Codeforces | Codeforces Round #188 (Div. 1) | 10 |

323 | Suns and Rays | Codeforces | ABBYY Cup 3.0 | 10 |

324 | Polygon | Codeforces | Testing Round #6 | 10 |

325 | HQ | Codeforces | April Fools Day Contest 2013 | 10 |

326 | Dynamic Programming | A2 Online Judge | 10 | |

327 | Karen and Neighborhood | Codeforces | Codeforces Round #419 (Div. 1) | 10 |

328 | Chess Championship | Codeforces | Codeforces Round #382 (Div. 1) | 10 |

329 | Finding lines | Codeforces | Codeforces Round #407 (Div. 1) | 10 |

330 | Create a Maze | Codeforces | Codeforces Round #372 (Div. 1) | 10 |

331 | Perpetual Motion Machine | Codeforces | Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) | 10 |