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

1 | Team | Codeforces | Codeforces Round #143 (Div. 2) | 1 | |

2 | System of Equations | Codeforces | Codeforces Round #131 (Div. 2) | 1 | |

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

4 | Cut Ribbon | Codeforces | Codeforces Round #119 (Div. 2) | 1 | |

5 | I_love_\%username\% | Codeforces | Codeforces Round #109 (Div. 2) | 1 | |

6 | Lucky Division | Codeforces | Codeforces Beta Round #91 (Div. 2 Only) | 1 | |

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

8 | IQ test | Codeforces | Codeforces Beta Round #25 (Div. 2 Only) | 1 | |

9 | Triangle | Codeforces | Codeforces Beta Round #6 (Div. 2 Only) | 1 | |

10 | Candy | SPOJ | 1 | ||

11 | Candy I | SPOJ | 1 | ||

12 | Grouping Problem | TJU | 1 | ||

13 | Play with Dates | SPOJ | 1 | ||

14 | Pangram | Codeforces | Codeforces Round #295 (Div. 2) | 1 | |

15 | Burger Time? | UVA | 1 | ||

16 | Amr and Pins | Codeforces | Codeforces Round #287 (Div. 2) | 1 | |

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

18 | Kefa and First Steps | Codeforces | Codeforces Round #321 (Div. 2) | 1 | |

19 | Gerald's Hexagon | Codeforces | Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2) | 1 | |

20 | Lala Land and Apple Trees | Codeforces | Codeforces Round #312 (Div. 2) | 1 | |

21 | Kyoya and Photobooks | Codeforces | Codeforces Round #309 (Div. 2) | 1 | |

22 | Divisibility by Eight | Codeforces | Codeforces Round #306 (Div. 2) | 1 | |

23 | Preparing Olympiad | Codeforces | Codeforces Round #306 (Div. 2) | 1 | |

24 | Two Substrings | Codeforces | Codeforces Round #306 (Div. 2) | 1 | |

25 | Mike and Fax | Codeforces | Codeforces Round #305 (Div. 2) | 1 | |

26 | Soldier and Cards | Codeforces | Codeforces Round #304 (Div. 2) | 1 | |

27 | Soldier and Badges | Codeforces | Codeforces Round #304 (Div. 2) | 1 | |

28 | Tavas and SaDDas | Codeforces | Codeforces Round #299 (Div. 2) | 1 | |

29 | Han Solo and Lazer Gun | Codeforces | Codeforces Round #291 (Div. 2) | 1 | |

30 | Maximum in Table | Codeforces | Codeforces Round #289 (Div. 2, ACM ICPC Rules) | 1 | |

31 | Minimum Difficulty | Codeforces | Codeforces Round #283 (Div. 2) | 1 | |

32 | Giga Tower | Codeforces | Codeforces Round #278 (Div. 2) | 1 | |

33 | Counterexample | Codeforces | Codeforces Round #275 (Div. 2) | 1 | |

34 | Expression | Codeforces | Codeforces Round #274 (Div. 2) | 1 | |

35 | Dreamoon and WiFi | Codeforces | Codeforces Round #272 (Div. 2) | 1 | |

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

37 | Number of Ways | Codeforces | Codeforces Round #266 (Div. 2) | 1 | |

38 | Appleman and Easy Task | Codeforces | Codeforces Round #263 (Div. 2) | 1 | |

39 | Vasya and Socks | Codeforces | Codeforces Round #262 (Div. 2) | 1 | |

40 | Bear and Raspberry | Codeforces | Codeforces Round #226 (Div. 2) | 1 | |

41 | Playing with Dice | Codeforces | Codeforces Round #222 (Div. 2) | 1 | |

42 | Fence | Codeforces | Codeforces Round #211 (Div. 2) | 1 | |

43 | Jeff and Digits | Codeforces | Codeforces Round #204 (Div. 2) | 1 | |

44 | TL | Codeforces | Codeforces Round #203 (Div. 2) | 1 | |

45 | Cakeminator | Codeforces | Codeforces Round #192 (Div. 2) | 1 | |

46 | Flipping Game | Codeforces | Codeforces Round #191 (Div. 2) | 1 | |

47 | Magic Numbers | Codeforces | Codeforces Round #189 (Div. 2) | 1 | |

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

49 | Books | Codeforces | Codeforces Round #171 (Div. 2) | 1 | |

50 | Beautiful Year | Codeforces | Codeforces Round #166 (Div. 2) | 1 | |

51 | Games | Codeforces | Codeforces Round #164 (Div. 2) | 1 | |

52 | Parallelepiped | Codeforces | Codeforces Round #138 (Div. 2) | 1 | |

53 | Ice Skating | Codeforces | Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) | 1 | |

54 | Panoramix's Prediction | Codeforces | Codeforces Beta Round #69 (Div. 2 Only) | 1 | |

55 | Watermelon | Codeforces | Codeforces Beta Round #4 (Div. 2 Only) | 1 | |

56 | Bus to Udayland | Codeforces | Codeforces Round #369 (Div. 2) | 1 | |

57 | Taymyr is calling you | Codeforces | Codeforces Round #395 (Div. 2) | 1 | |

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

59 | QAQ | Codeforces | Codeforces Round #447 (Div. 2) | 1 | |

60 | Vladik and Courtesy | Codeforces | Codeforces Round #416 (Div. 2) | 1 | |

61 | Generous Kefa | Codeforces | Codeforces Round #429 (Div. 2) | 1 | |

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

63 | Beru-taxi | Codeforces | Codeforces Round #367 (Div. 2) | 1 | |

64 | Karen and Morning | Codeforces | Codeforces Round #419 (Div. 2) | 1 | |

65 | The Artful Expedient | Codeforces | Codeforces Round #439 (Div. 2) | 1 | |

66 | The Monster | Codeforces | Codeforces Round #406 (Div. 2) | 1 | |

67 | Arpa’s hard exam and Mehrdad’s naive cheat | Codeforces | Codeforces Round #383 (Div. 2) | 1 | |

68 | Little Elephant and Magic Square | Codeforces | Codeforces Round #157 (Div. 2) | 2 | |

69 | Shooshuns and Sequence | Codeforces | Codeforces Round #137 (Div. 2) | 2 | |

70 | Bicycle Chain | Codeforces | Codeforces Round #132 (Div. 2) | 2 | |

71 | Prizes, Prizes, more Prizes | Codeforces | Codeforces Round #130 (Div. 2) | 2 | |

72 | Little Elephant and Rozdil | Codeforces | Codeforces Round #129 (Div. 2) | 2 | |

73 | Ice Sculptures | Codeforces | VK Cup 2012 Qualification Round 1 | 2 | |

74 | Game Outcome | Codeforces | Codeforces Round #110 (Div. 2) | 2 | |

75 | Help Vasilisa the Wise 2 | Codeforces | Codeforces Round #102 (Div. 2) | 2 | |

76 | Lucky Substring | Codeforces | Codeforces Beta Round #91 (Div. 2 Only) | 2 | |

77 | Lucky Numbers (easy) | Codeforces | Codeforces Beta Round #77 (Div. 2 Only) | 2 | |

78 | Petya and Countryside | Codeforces | Codeforces Beta Round #61 (Div. 2) | 2 | |

79 | Triangular numbers | Codeforces | Codeforces Beta Round #44 (Div. 2) | 2 | |

80 | Second Order Statistics | Codeforces | Codeforces Beta Round #22 (Div. 2 Only) | 2 | |

81 | Hexadecimal's Numbers | Codeforces | Codeforces Beta Round #9 (Div. 2 Only) | 2 | |

82 | GRADE POINT AVERAGE | SPOJ | 2 | ||

83 | Dima and Continuous Line | Codeforces | Codeforces Round #208 (Div. 2) | 2 | |

84 | Bear and Three Balls | Codeforces | IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) | 2 | |

85 | Ebony and Ivory | Codeforces | Manthan, Codefest 16 | 2 | |

86 | Interview | Codeforces | Codeforces Round #344 (Div. 2) | 2 | |

87 | Far Relative’s Problem | Codeforces | Codeforces Round #343 (Div. 2) | 2 | |

88 | Robot Sequence | Codeforces | 8VC Venture Cup 2016 - Elimination Round | 2 | |

89 | Link/Cut Tree | Codeforces | Codeforces Round #339 (Div. 2) | 2 | |

90 | New Year and Old Property | Codeforces | Good Bye 2015 | 2 | |

91 | 2Char | Codeforces | Codeforces Round #329 (Div. 2) | 2 | |

92 | Bear and Three Musketeers | Codeforces | Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) | 2 | |

93 | Case of Fake Numbers | Codeforces | Codeforces Round #310 (Div. 2) | 2 | |

94 | Ohana Cleans Up | Codeforces | Codeforces Round #309 (Div. 2) | 2 | |

95 | Mike and Fun | Codeforces | Codeforces Round #305 (Div. 2) | 2 | |

96 | Tourist's Notes | Codeforces | Codeforces Round #300 | 2 | |

97 | Cutting Banner | Codeforces | Codeforces Round #300 | 2 | |

98 | Drazil and His Happy Friends | Codeforces | Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2) | 2 | |

99 | Pasha and Pixels | Codeforces | Codeforces Round #288 (Div. 2) | 2 | |

100 | Mr. Kitayuta's Gift | Codeforces | Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) | 2 | |

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

102 | Hacking Cypher | Codeforces | Codeforces Round #279 (Div. 2) | 2 | |

103 | Valuable Resources | Codeforces | Codeforces Round #276 (Div. 2) | 2 | |

104 | Towers | Codeforces | Codeforces Round #274 (Div. 2) | 2 | |

105 | Strongly Connected City | Codeforces | Bayan 2015 Contest Warm Up | 2 | |

106 | Little Dima and Equation | Codeforces | Codeforces Round #262 (Div. 2) | 2 | |

107 | Multiplication Table | Codeforces | Codeforces Round #256 (Div. 2) | 2 | |

108 | Kitahara Haruki's Gift | Codeforces | Codeforces Round #248 (Div. 2) | 2 | |

109 | Football Kit | Codeforces | Codeforces Round #246 (Div. 2) | 2 | |

110 | Shower Line | Codeforces | Codeforces Round #247 (Div. 2) | 2 | |

111 | George and Round | Codeforces | Codeforces Round #227 (Div. 2) | 2 | |

112 | Bear and Strings | Codeforces | Codeforces Round #226 (Div. 2) | 2 | |

113 | Hamburgers | Codeforces | Codeforces Round #218 (Div. 2) | 2 | |

114 | Group of Students | Codeforces | Codeforces Round #207 (Div. 2) | 2 | |

115 | Simple Molecules | Codeforces | Codeforces Round #200 (Div. 2) | 2 | |

116 | Sail | Codeforces | Codeforces Round #180 (Div. 2) | 2 | |

117 | Polo the Penguin and Matrix | Codeforces | Codeforces Round #177 (Div. 2) | 2 | |

118 | IQ Test | Codeforces | Codeforces Round #176 (Div. 2) | 2 | |

119 | Prime Matrix | Codeforces | Codeforces Round #166 (Div. 2) | 2 | |

120 | Little Elephant and Chess | Codeforces | Codeforces Round #157 (Div. 2) | 2 | |

121 | Another Problem on Strings | Codeforces | Codeforces Round #112 (Div. 2) | 2 | |

122 | Mr. Kitayuta's Colorful Graph | Codeforces | Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) | 2 | |

123 | Economy Game | Codeforces | Codeforces Round #357 (Div. 2) | 2 | |

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

125 | Thor | Codeforces | Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) | 2 | |

126 | Pride | Codeforces | Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2) | 2 | |

127 | Mr. Kitayuta's Colorful Graph | Codeforces | Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) | 2 | |

128 | Vicious Keyboard | Codeforces | Codeforces Round #409 (rated, Div. 2, based on VK Cup 2017 Round 2) | 2 | |

129 | Ilya and tic-tac-toe game | Codeforces | Codeforces Round #390 (Div. 2) | 2 | |

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

131 | Alyona and copybooks | Codeforces | Codeforces Round #381 (Div. 2) | 2 | |

132 | Okabe and Banana Trees | Codeforces | Codeforces Round #420 (Div. 2) | 2 | |

133 | Chtholly's request | Codeforces | Codeforces Round #449 (Div. 2) | 2 | |

134 | Pizza Separation | Codeforces | Codeforces Round #448 (Div. 2) | 2 | |

135 | Kirill And The Game | Codeforces | Codeforces Round #430 (Div. 2) | 2 | |

136 | Mike and strings | Codeforces | Codeforces Round #410 (Div. 2) | 2 | |

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

138 | Letters | Codeforces | Codeforces Round #481 (Div. 3) | 2 | |

139 | Little Xor | Codeforces | Codeforces Round #153 (Div. 2) | 3 | |

140 | Colorful Graph | Codeforces | Codeforces Round #151 (Div. 2) | 3 | |

141 | Heads or Tails | Codeforces | Codeforces Round #149 (Div. 2) | 3 | |

142 | Color Stripe | Codeforces | Codeforces Round #135 (Div. 2) | 3 | |

143 | Two Problems | Codeforces | Codeforces Round #128 (Div. 2) | 3 | |

144 | LLPS | Codeforces | Codeforces Round #127 (Div. 2) | 3 | |

145 | Let's Watch Football | Codeforces | Codeforces Round #123 (Div. 2) | 3 | |

146 | Funky Numbers | Codeforces | Codeforces Round #121 (Div. 2) | 3 | |

147 | Common Divisors | Codeforces | Codeforces Round #117 (Div. 2) | 3 | |

148 | Phone Code | Codeforces | Croc Champ 2012 - Qualification Round | 3 | |

149 | Dress'em in Vests! | Codeforces | VK Cup 2012 Round 1 | 3 | |

150 | Students and Shoelaces | Codeforces | Codeforces Beta Round #94 (Div. 2 Only) | 3 | |

151 | Ball Game | Codeforces | School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) | 3 | |

152 | Reconnaissance | Codeforces | Codeforces Beta Round #32 (Div. 2, Codeforces format) | 3 | |

153 | Noldbach problem | Codeforces | Codeforces Beta Round #17 | 3 | |

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

155 | Tic-tac-toe | Codeforces | Codeforces Beta Round #3 | 3 | |

156 | Catch Me If You Can | SPOJ | 3 | ||

157 | Polo the Penguin and Segments | Codeforces | Codeforces Round #177 (Div. 2) | 3 | |

158 | Point on Spiral | Codeforces | Codeforces Round #171 (Div. 2) | 3 | |

159 | Bear and Compressing | Codeforces | IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) | 3 | |

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

161 | Block Towers | Codeforces | 8VC Venture Cup 2016 - Elimination Round | 3 | |

162 | The Text Splitting | Codeforces | Educational Codeforces Round 4 | 3 | |

163 | Gennady the Dentist | Codeforces | Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2) | 3 | |

164 | Finding Team Member | Codeforces | Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] | 3 | |

165 | "Or" Game | Codeforces | Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] | 3 | |

166 | Primes or Palindromes? | Codeforces | Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2) | 3 | |

167 | Vanya and Scales | Codeforces | Codeforces Round #308 (Div. 2) | 3 | |

168 | King of Thieves | Codeforces | ZeptoLab Code Rush 2015 | 3 | |

169 | Permutations | Codeforces | Rockethon 2015 | 3 | |

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

171 | Vasya and Basketball | Codeforces | Codeforces Round #281 (Div. 2) | 3 | |

172 | Unbearable Controversy of Being | Codeforces | Codeforces Round #277.5 (Div. 2) | 3 | |

173 | Art Union | Codeforces | Codeforces Round #241 (Div. 2) | 3 | |

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

175 | Triangle | Codeforces | Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) | 3 | |

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

177 | Inna and New Matrix of Candies | Codeforces | Codeforces Round #234 (Div. 2) | 3 | |

178 | Bear and Prime Numbers | Codeforces | Codeforces Round #226 (Div. 2) | 3 | |

179 | Dima and To-do List | Codeforces | Codeforces Round #214 (Div. 2) | 3 | |

180 | Vasya and Robot | Codeforces | Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) | 3 | |

181 | Perfect Pair | Codeforces | Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2) | 3 | |

182 | Sereja and Bottles | Codeforces | Codeforces Round #187 (Div. 2) | 3 | |

183 | Pythagorean Theorem II | Codeforces | Codeforces Round #183 (Div. 2) | 3 | |

184 | Coach | Codeforces | Codeforces Round #181 (Div. 2) | 3 | |

185 | Cows and Poker Game | Codeforces | Codeforces Round #174 (Div. 2) | 3 | |

186 | Non-square Equation | Codeforces | Codeforces Round #144 (Div. 2) | 3 | |

187 | Robbers' watch | Codeforces | Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2) | 3 | |

188 | Sagheer, the Hausmeister | Codeforces | Codeforces Round #417 (Div. 2) | 3 | |

189 | Karen and Game | Codeforces | Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) | 3 | |

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

191 | An impassioned circulation of affection | Codeforces | Codeforces Round #418 (Div. 2) | 3 | |

192 | Masha and geometric depression | Codeforces | Codeforces Round #407 (Div. 2) | 3 | |

193 | Mahmoud and a Message | Codeforces | Codeforces Round #396 (Div. 2) | 3 | |

194 | Almost Arithmetical Progression | Codeforces | Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) | 4 | |

195 | Undoubtedly Lucky Numbers | Codeforces | Codeforces Round #150 (Div. 2) | 4 | |

196 | Magic Box | Codeforces | Codeforces Round #143 (Div. 2) | 4 | |

197 | Shifts | Codeforces | Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2) | 4 | |

198 | Two Tables | Codeforces | Codeforces Round #141 (Div. 2) | 4 | |

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

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

201 | Little Elephant and Sorting | Codeforces | Codeforces Round #129 (Div. 2) | 4 | |

202 | Walking in the Rain | Codeforces | Codeforces Round #121 (Div. 2) | 4 | |

203 | Counting Rhombi | Codeforces | Codeforces Round #119 (Div. 2) | 4 | |

204 | Letter | Codeforces | Codeforces Round #116 (Div. 2, ACM-ICPC Rules) | 4 | |

205 | String Manipulation 1.0 | Codeforces | VK Cup 2012 Qualification Round 2 | 4 | |

206 | Message | Codeforces | Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) | 4 | |

207 | Lucky Mask | Codeforces | Codeforces Round #104 (Div. 2) | 4 | |

208 | Elevator | Codeforces | School Regional Team Contest, Saratov, 2011 | 4 | |

209 | Choosing Laptop | Codeforces | Codeforces Beta Round #82 (Div. 2) | 4 | |

210 | Chord | Codeforces | Codeforces Beta Round #73 (Div. 2 Only) | 4 | |

211 | Fire Again | Codeforces | Codeforces Beta Round #35 (Div. 2) | 4 | |

212 | Spit Problem | Codeforces | Codeforces Beta Round #29 (Div. 2, Codeforces format) | 4 | |

213 | Tournament | Codeforces | Codeforces Beta Round #27 (Codeforces format, Div. 2) | 4 | |

214 | Roads not only in Berland | Codeforces | Codeforces Beta Round #25 (Div. 2 Only) | 4 | |

215 | You're Given a String... | Codeforces | Codeforces Beta Round #23 | 4 | |

216 | Triangle | Codeforces | Codeforces Beta Round #18 (Div. 2 Only) | 4 | |

217 | Running Student | Codeforces | Codeforces Beta Round #9 (Div. 2 Only) | 4 | |

218 | TWO BISHOPS | SPOJ | 4 | ||

219 | Minion Circle | CodeChef | 4 | ||

220 | Brute-force Algorithm | Live Archive | 2009 | Asia - Shanghai | 4 |

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

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

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

224 | Orchestra | Codeforces | 8VC Venture Cup 2016 - Final Round (Div. 2 Edition) & 8VC Venture Cup 2016 - Final Round (Div. 1 Edition) | 4 | |

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

226 | Spongebob and Squares | Codeforces | Codeforces Round #332 (Div. 2) | 4 | |

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

228 | Amr and Chemistry | Codeforces | Codeforces Round #312 (Div. 2) | 4 | |

229 | Arthur and Table | Codeforces | Codeforces Round #311 (Div. 2) | 4 | |

230 | Vanya and Triangles | Codeforces | Codeforces Round #308 (Div. 2) | 4 | |

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

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

233 | Fox And Jumping | Codeforces | Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) | 4 | |

234 | Fight the Monster | Codeforces | Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) | 4 | |

235 | Captain Marmot | Codeforces | Codeforces Round #271 (Div. 2) | 4 | |

236 | MUH and House of Cards | Codeforces | Codeforces Round #269 (Div. 2) | 4 | |

237 | Wonder Room | Codeforces | Codeforces Round #266 (Div. 2) | 4 | |

238 | Little Pony and Harmony Chest | Codeforces | Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) | 4 | |

239 | Predict Outcome of the Game | Codeforces | Codeforces Round #258 (Div. 2) | 4 | |

240 | DZY Loves Modification | Codeforces | Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2) | 4 | |

241 | Kolya and Tandem Repeat | Codeforces | Codeforces Round #253 (Div. 2) | 4 | |

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

243 | Balls Game | Codeforces | Codeforces Round #245 (Div. 2) | 4 | |

244 | Sereja and Swaps | Codeforces | Codeforces Round #243 (Div. 1) & Codeforces Round #243 (Div. 2) | 4 | |

245 | Trees in a Row | Codeforces | Codeforces Round #236 (Div. 2) | 4 | |

246 | Sereja and Prefixes | Codeforces | Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2) | 4 | |

247 | Pair of Numbers | Codeforces | Codeforces Round #209 (Div. 2) | 4 | |

248 | Dima and Text Messages | Codeforces | Codeforces Round #208 (Div. 2) | 4 | |

249 | Resort | Codeforces | Codeforces Round #203 (Div. 2) | 4 | |

250 | Xenia and Spies | Codeforces | Codeforces Round #199 (Div. 2) | 4 | |

251 | Beautiful Numbers | Codeforces | Codeforces Round #181 (Div. 2) | 4 | |

252 | Ksusha and Array | Codeforces | Croc Champ 2013 - Round 2 (Div. 2 Edition) | 4 | |

253 | New Problem | Codeforces | Codeforces Round #170 (Div. 2) | 4 | |

254 | Ancient Prophesy | Codeforces | Codeforces Round #158 (Div. 2) | 4 | |

255 | View Angle | Codeforces | Codeforces Round #159 (Div. 2) | 4 | |

256 | Palindrome pairs | Codeforces | VK Cup 2012 Qualification Round 2 | 4 | |

257 | Tennis Game | Codeforces | Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1) | 4 | |

258 | Office Keys | Codeforces | Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals) | 4 | |

259 | Tell Your World | Codeforces | Codeforces Round #431 (Div. 2) | 4 | |

260 | Remove Extra One | Codeforces | Codeforces Round #450 (Div. 2) | 4 | |

261 | Game of the Rows | Codeforces | Codeforces Round #428 (Div. 2) | 4 | |

262 | Jury Size | Codeforces | Codeforces Round #155 (Div. 2) | 5 | |

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

264 | Game on Paper | Codeforces | Codeforces Round #128 (Div. 2) | 5 | |

265 | Series of Crimes | Codeforces | Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition) | 5 | |

266 | Robot Bicorn Attack | Codeforces | Codeforces Round #115 | 5 | |

267 | Broken checker | Codeforces | April Fools Day Contest | 5 | |

268 | Compatible Numbers | Codeforces | Codeforces Round #112 (Div. 2) | 5 | |

269 | Help Farmer | Codeforces | Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) | 5 | |

270 | Rectangle and Square | Codeforces | Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2) | 5 | |

271 | Permutations | Codeforces | Codeforces Beta Round #92 (Div. 2 Only) | 5 | |

272 | Three Sons | Codeforces | School Regional Team Contest, Saratov, 2011 | 5 | |

273 | Fancy Number | Codeforces | Codeforces Beta Round #89 (Div. 2) | 5 | |

274 | PFAST Inc. | Codeforces | Codeforces Beta Round #86 (Div. 2 Only) | 5 | |

275 | Clothes | Codeforces | Codeforces Beta Round #79 (Div. 2 Only) | 5 | |

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

277 | Martian Dollar | Codeforces | Codeforces Beta Round #40 (Div. 2) | 5 | |

278 | Chess | Codeforces | School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) | 5 | |

279 | Accounting | Codeforces | Codeforces Beta Round #30 (Codeforces format) | 5 | |

280 | Number With The Given Amount Of Divisors | Codeforces | Codeforces Beta Round #27 (Codeforces format, Div. 2) | 5 | |

281 | Bargaining Table | Codeforces | Codeforces Beta Round #22 (Div. 2 Only) | 5 | |

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

283 | Brute-force Algorithm EXTREME | SPOJ | 5 | ||

284 | 4-point polyline | Codeforces | MemSQL Start[c]UP 2.0 - Round 1 | 5 | |

285 | Restore Cube | Codeforces | Codeforces Round #265 (Div. 1) | 5 | |

286 | Shopping | Codeforces | Educational Codeforces Round 12 | 5 | |

287 | Fibonacci-ish | Codeforces | Manthan, Codefest 16 | 5 | |

288 | Jerry's Protest | Codeforces | 8VC Venture Cup 2016 - Elimination Round | 5 | |

289 | Skills | Codeforces | Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2) | 5 | |

290 | Chocolate Bar | Codeforces | Educational Codeforces Round 1 | 5 | |

291 | Boulevard | Codeforces | 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) | 5 | |

292 | Mike and Frog | Codeforces | Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2) | 5 | |

293 | Om Nom and Candies | Codeforces | ZeptoLab Code Rush 2015 | 5 | |

294 | Inversions problem | Codeforces | Rockethon 2015 | 5 | |

295 | Chocolate | Codeforces | Codeforces Round #279 (Div. 2) | 5 | |

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

297 | CGCDSSQ | Codeforces | Bayan 2015 Contest Warm Up | 5 | |

298 | Borya and Hanabi | Codeforces | Codeforces Round #253 (Div. 1) & Codeforces Round #253 (Div. 2) | 5 | |

299 | Roman and Numbers | Codeforces | Codeforces Round #235 (Div. 2) | 5 | |

300 | Counting Rectangles is Fun | Codeforces | Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) | 5 | |

301 | Vasya and Beautiful Arrays | Codeforces | Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) | 5 | |

302 | Vasily the Bear and Sequence | Codeforces | Codeforces Round #195 (Div. 2) | 5 | |

303 | Continued Fractions | Codeforces | Codeforces Round #184 (Div. 2) | 5 | |

304 | Calendar | Codeforces | Codeforces Round #183 (Div. 2) | 5 | |

305 | Ksusha the Squirrel | Codeforces | Croc Champ 2013 - Round 2 (Div. 2 Edition) | 5 | |

306 | Network Mask | Codeforces | Croc Champ 2013 - Qualification Round | 5 | |

307 | Nearest Fraction | Codeforces | Codeforces Round #172 (Div. 2) | 5 | |

308 | Average Numbers | Codeforces | Codeforces Testing Round #3 | 5 | |

309 | Petr# | Codeforces | Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) | 5 | |

310 | Bitwise Formula | Codeforces | Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2) | 5 | |

311 | Hanoi Factory | Codeforces | Codeforces Round #401 (Div. 2) | 5 | |

312 | The Queue | Codeforces | Codeforces Round #398 (Div. 2) | 5 | |

313 | Little Elephant and LCM | Codeforces | Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) | 6 | |

314 | Little Elephant and Elections | Codeforces | Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) | 6 | |

315 | Mr. Bender and Square | Codeforces | Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) | 6 | |

316 | Unsorting Array | Codeforces | Codeforces Round #153 (Div. 2) | 6 | |

317 | Easy Tape Programming | Codeforces | Codeforces Round #148 (Div. 2) | 6 | |

318 | Number of Triplets | Codeforces | Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition) | 6 | |

319 | Party | Codeforces | ABBYY Cup 2.0 - Easy | 6 | |

320 | New Year Cards | Codeforces | Codeforces Round #100 | 6 | |

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

322 | Hot Bath | Codeforces | Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) | 6 | |

323 | Lucky Permutation | Codeforces | Codeforces Beta Round #91 (Div. 1 Only) & Codeforces Beta Round #91 (Div. 2 Only) | 6 | |

324 | Very Interesting Game | Codeforces | Codeforces Beta Round #88 | 6 | |

325 | Lucky Probability | Codeforces | Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only) | 6 | |

326 | Time to Raid Cowavans | Codeforces | Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only) | 6 | |

327 | Sum of Medians | Codeforces | Yandex.Algorithm 2011 Round 1 | 6 | |

328 | Heroes | Codeforces | Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only) | 6 | |

329 | Harry Potter and the History of Magic | Codeforces | Codeforces Beta Round #60 | 6 | |

330 | Trees | Codeforces | Codeforces Beta Round #54 (Div. 2) | 6 | |

331 | Smallest number | Codeforces | Codeforces Beta Round #51 | 6 | |

332 | Land Lot | Codeforces | School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) | 6 | |

333 | Blinds | Codeforces | School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) | 6 | |

334 | Wonderful Randomized Sum | Codeforces | Codeforces Beta Round #33 (Codeforces format) | 6 | |

335 | Lizards and Basements 2 | Codeforces | Codeforces Beta Round #6 (Div. 2 Only) | 6 | |

336 | Kingdoms | UVA | 6 | ||

337 | FLING1 | SPOJ | 6 | ||

338 | Bear and Up-Down | Codeforces | IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) | 6 | |

339 | Longest Subsequence | Codeforces | Educational Codeforces Round 9 | 6 | |

340 | Vanya and Brackets | Codeforces | Codeforces Round #308 (Div. 2) | 6 | |

341 | A Heap of Heaps | Codeforces | Codeforces Round #300 | 6 | |

342 | Anya and Cubes | Codeforces | Codeforces Round #297 (Div. 2) | 6 | |

343 | Restoring Increasing Sequence | Codeforces | Codeforces Round #279 (Div. 2) | 6 | |

344 | Caisa and Tree | Codeforces | Codeforces Round #264 (Div. 2) | 6 | |

345 | Divisors | Codeforces | Codeforces Round #256 (Div. 2) | 6 | |

346 | Fly, freebies, fly! | Codeforces | Testing Round #9 | 6 | |

347 | New Year Letter | Codeforces | Good Bye 2013 | 6 | |

348 | Maximal Area Quadrilateral | Codeforces | Codeforces Round #198 (Div. 2) | 6 | |

349 | Characteristics of Rectangles | Codeforces | Codeforces Round #194 (Div. 1) | 6 | |

350 | Oh Sweet Beaverette | Codeforces | ABBYY Cup 3.0 - Finals (online version) | 6 | |

351 | Ants | Codeforces | Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2) | 6 | |

352 | Summer Homework | Codeforces | ABBYY Cup 3.0 | 6 | |

353 | EKG | Codeforces | ABBYY Cup 3.0 | 6 | |

354 | Encrypting Messages | Codeforces | ABBYY Cup 2.0 - Easy | 6 | |

355 | Bulls and Cows | Codeforces | Codeforces Beta Round #59 (Div. 2) | 6 | |

356 | Platforms | Codeforces | Codeforces Beta Round #18 (Div. 2 Only) | 6 | |

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

358 | Karen and Supermarket | Codeforces | Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) | 6 | |

359 | Vladik and cards | Codeforces | Codeforces Round #384 (Div. 2) | 6 | |

360 | Table with Letters - 2 | Codeforces | Codeforces Round #154 (Div. 2) | 7 | |

361 | Blackboard Fibonacci | Codeforces | Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) | 7 | |

362 | Brand New Easy Problem | Codeforces | Codeforces Round #127 (Div. 2) | 7 | |

363 | Football Championship | Codeforces | Codeforces Round #126 (Div. 2) | 7 | |

364 | Xor | Codeforces | Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2) | 7 | |

365 | Spiral Maximum | Codeforces | Croc Champ 2012 - Round 1 | 7 | |

366 | Pairs of Numbers | Codeforces | Codeforces Testing Round #3 | 7 | |

367 | Double Happiness | Codeforces | Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) | 7 | |

368 | Treasure Island | Codeforces | Codeforces Beta Round #82 (Div. 2) | 7 | |

369 | Dark Assembly | Codeforces | Codeforces Beta Round #81 | 7 | |

370 | Help Victoria the Wise | Codeforces | Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only) | 7 | |

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

372 | THE N WITTY FRIENDS | SPOJ | 7 | ||

373 | Binary Table | Codeforces | CROC 2016 - Final Round [Private, For Onsite Finalists Only] | 7 | |

374 | Three-dimensional Turtle Super Computer | Codeforces | VK Cup 2016 - Qualification Round 2 | 7 | |

375 | Rat Kwesh and Cheese | Codeforces | Codeforces Round #341 (Div. 2) | 7 | |

376 | Edo and Magnets | Codeforces | Codeforces Round #330 (Div. 1) & Codeforces Round #330 (Div. 2) | 7 | |

377 | Group Photo 2 (online mirror version) | Codeforces | VK Cup 2015 - Round 1 (unofficial online mirror, Div. 1 only) | 7 | |

378 | Fuzzy Search | Codeforces | Codeforces Round #296 (Div. 1) | 7 | |

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

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

381 | Elections | Codeforces | MemSQL Start[c]UP 2.0 - Round 2 | 7 | |

382 | Special Grid | Codeforces | Codeforces Round #249 (Div. 2) | 7 | |

383 | Curious Array | Codeforces | Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) | 7 | |

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

385 | Subset Sums | Codeforces | Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2) | 7 | |

386 | Divisor Tree | Codeforces | Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1) | 7 | |

387 | Minimum Modular | Codeforces | Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2) | 7 | |

388 | Beautiful IP Addresses | Codeforces | Croc Champ 2013 - Round 1 | 7 | |

389 | Log Stream Analysis | Codeforces | CROC-MBTU 2012, Elimination Round (ACM-ICPC) | 7 | |

390 | Programming Language | Codeforces | Codeforces Round #126 (Div. 2) | 7 | |

391 | ucyhf | Codeforces | April Fools Day Contest | 7 | |

392 | Game | Codeforces | Codeforces Beta Round #46 (Div. 2) | 7 | |

393 | Seller Bob | Codeforces | Codeforces Beta Round #18 (Div. 2 Only) | 7 | |

394 | Hongcow Buys a Deck of Cards | Codeforces | Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) | 7 | |

395 | Bamboo Partition | Codeforces | Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals) | 7 | |

396 | Peterson Polyglot | Codeforces | Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2) | 7 | |

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

398 | Anton and Permutation | Codeforces | Codeforces Round #404 (Div. 2) | 7 | |

399 | Mad Joe | Codeforces | CROC-MBTU 2012, Final Round (Online version, Div. 2) | 8 | |

400 | Suggested Friends | Codeforces | CROC-MBTU 2012, Elimination Round (ACM-ICPC) | 8 | |

401 | Crosses | Codeforces | Codeforces Round #132 (Div. 2) | 8 | |

402 | Cinema | Codeforces | Codeforces Round #126 (Div. 2) | 8 | |

403 | Zoo | Codeforces | Croc Champ 2012 - Final | 8 | |

404 | Polycarpus the Safecracker | Codeforces | VK Cup 2012 Round 1 | 8 | |

405 | Help Caretaker | Codeforces | Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) | 8 | |

406 | Chip Play | Codeforces | Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) | 8 | |

407 | Mushroom Strife | Codeforces | Codeforces Beta Round #56 | 8 | |

408 | Safe | Codeforces | Codeforces Beta Round #44 (Div. 2) | 8 | |

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

410 | Collisions | Codeforces | Codeforces Beta Round #34 (Div. 2) | 8 | |

411 | Sereja and Tree | Codeforces | Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2) | 8 | |

412 | The Diameter of Tree | Live Archive | 2014 | Asia - Xian | 8 |

413 | Magic Matrix | Codeforces | Educational Codeforces Round 9 | 8 | |

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

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

416 | Dima and Magic Guitar | Codeforces | Codeforces Round #214 (Div. 2) | 8 | |

417 | Ghd | Codeforces | Codeforces Round #213 (Div. 1) | 8 | |

418 | Beautiful Set | Codeforces | Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2) | 8 | |

419 | Summer Earnings | Codeforces | Codeforces Round #194 (Div. 1) | 8 | |

420 | Cube Problem | Codeforces | Croc Champ 2013 - Round 2 | 8 | |

421 | Distinct Paths | Codeforces | Croc Champ 2013 - Round 2 | 8 | |

422 | Vanya and Balloons | Codeforces | Codeforces Round #355 (Div. 2) | 8 | |

423 | Dividing Kingdom II | Codeforces | Codeforces Round #360 (Div. 1) | 8 | |

424 | Kay and Eternity | Codeforces | Codeforces Round #359 (Div. 1) | 8 | |

425 | Timofey and remoduling | Codeforces | Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2) | 8 | |

426 | Gosha is hunting | Codeforces | Codeforces Round #381 (Div. 1) | 8 | |

427 | Mother of Dragons | Codeforces | Codeforces Round #428 (Div. 2) | 8 | |

428 | Rats | Codeforces | Codeforces Round #155 (Div. 2) | 9 | |

429 | Race | Codeforces | Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) | 9 | |

430 | Bitonix' Patrol | Codeforces | Codeforces Round #134 (Div. 1) | 9 | |

431 | Brand New Problem | Codeforces | Codeforces Round #127 (Div. 1) | 9 | |

432 | Gripping Story | Codeforces | Codeforces Round #125 (Div. 1) | 9 | |

433 | Fibonacci Number | Codeforces | Codeforces Round #122 (Div. 1) | 9 | |

434 | Power Defence | Codeforces | Codeforces Round #115 | 9 | |

435 | Plane of Tanks: Duel | Codeforces | Codeforces Round #115 | 9 | |

436 | Minimum Diameter | Codeforces | VK Cup 2012 Round 3 | 9 | |

437 | Large Refrigerator | Codeforces | VK Cup 2012 Round 2 | 9 | |

438 | Frames | Codeforces | Codeforces Round #108 (Div. 2) | 9 | |

439 | Cycle | Codeforces | Codeforces Beta Round #97 (Div. 1) | 9 | |

440 | Item World | Codeforces | Codeforces Beta Round #81 | 9 | |

441 | Domino | Codeforces | Yandex.Algorithm 2011 Finals | 9 | |

442 | Azembler | Codeforces | Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only) | 9 | |

443 | Solitaire | Codeforces | Codeforces Beta Round #65 (Div. 2) | 9 | |

444 | Synchrophasotron | Codeforces | Codeforces Beta Round #62 | 9 | |

445 | Harry Potter and the Sorting Hat | Codeforces | Codeforces Beta Round #60 | 9 | |

446 | Prime Segment | Codeforces | Unknown Language Round #1 | 9 | |

447 | Savior | Codeforces | Codeforces Beta Round #56 | 9 | |

448 | Writing a Song | Codeforces | Codeforces Beta Round #50 | 9 | |

449 | Race | Codeforces | Codeforces Beta Round #42 (Div. 2) | 9 | |

450 | Walls | Live Archive | 2012 | North America - Southeast USA | 9 |

451 | BLOCK_D SOLVER | SPOJ | 9 | ||

452 | Task processing | Codeforces | 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) | 9 | |

453 | Sign Posts | Codeforces | Codeforces Round #315 (Div. 1) | 9 | |

454 | Pasha and Pipe | Codeforces | Codeforces Round #293 (Div. 2) | 9 | |

455 | Roland and Rose | Codeforces | Codeforces Round #262 (Div. 2) | 9 | |

456 | Physical Education and Buns | Codeforces | Codeforces Round #231 (Div. 2) | 9 | |

457 | Supercollider | Codeforces | Rockethon 2014 | 9 | |

458 | The Tournament | Codeforces | Rockethon 2014 | 9 | |

459 | Word Folding | Codeforces | Rockethon 2014 | 9 | |

460 | Dima and Kicks | Codeforces | Codeforces Round #208 (Div. 2) | 9 | |

461 | Pumping Stations | Codeforces | Codeforces Round #200 (Div. 1) | 9 | |

462 | Rectangles and Square | Codeforces | MemSQL start[c]up Round 2 - online version | 9 | |

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

464 | PE Lesson | Codeforces | ABBYY Cup 3.0 | 9 | |

465 | Fetch the Treasure | Codeforces | Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) | 9 | |

466 | Shaass and Painter Robot | Codeforces | Codeforces Round #178 (Div. 2) | 9 | |

467 | The Last Hole! | Codeforces | Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2) | 9 | |

468 | Rhombus | Codeforces | Codeforces Round #161 (Div. 2) | 9 | |

469 | Maxim and Calculator | Codeforces | Codeforces Round #160 (Div. 1) | 9 | |

470 | Dividing Kingdom | Codeforces | Codeforces Round #158 (Div. 2) | 9 | |

471 | Travelling Through the Snow Queen's Kingdom | Codeforces | Codeforces Round #359 (Div. 1) | 9 | |

472 | Bear and Chase | Codeforces | Codeforces Round #356 (Div. 1) | 9 | |

473 | Ever-Hungry Krakozyabra | Codeforces | Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2) | 9 | |

474 | Dasha and cyclic table | Codeforces | Codeforces Round #390 (Div. 2) | 9 | |

475 | Hellish Constraints | Codeforces | Codeforces Beta Round #99 (Div. 1) | 10 | |

476 | Pills | Codeforces | Codeforces Beta Round #93 (Div. 1 Only) | 10 | |

477 | Lucky Interval | Codeforces | Codeforces Beta Round #84 (Div. 1 Only) | 10 | |

478 | Lift and Throw | Codeforces | Codeforces Beta Round #81 | 10 | |

479 | Robot in Basement | Codeforces | Yandex.Algorithm 2011 Finals | 10 | |

480 | Long sequence | Codeforces | Yandex.Algorithm 2011 Round 2 | 10 | |

481 | Plane of Tanks | Codeforces | Codeforces Beta Round #66 | 10 | |

482 | Ali goes shopping | Codeforces | Unknown Language Round #2 | 10 | |

483 | Toys | Codeforces | School Team Contest #2 (Winter Computer School 2010/11) | 10 | |

484 | To Hack or not to Hack | Codeforces | CROC 2016 - Final Round [Private, For Onsite Finalists Only] | 10 | |

485 | Party | Codeforces | Bubble Cup 8 - Finals [Online Mirror] | 10 | |

486 | Gears | Codeforces | Codeforces Round #283 (Div. 1) | 10 | |

487 | Wavy numbers | Codeforces | Codeforces Round #273 (Div. 2) | 10 | |

488 | Banners | Codeforces | Zepto Code Rush 2014 | 10 | |

489 | Two Circles | Codeforces | Codeforces Round #211 (Div. 2) | 10 | |

490 | Tennis Rackets | Codeforces | Croc Champ 2013 - Finals (online version, Div. 1) | 10 | |

491 | Mrs. Hudson's Pancakes | Codeforces | Codeforces Round #110 (Div. 1) | 10 | |

492 | Entertaining Geodetics | Codeforces | Codeforces Beta Round #81 | 10 | |

493 | Chain Reaction | Codeforces | Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2) | 10 | |

494 | The Overdosing Ubiquity | Codeforces | Codeforces Round #439 (Div. 2) | 10 |