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graphs problems
Problem Name Online Judge Year Contest Difficulty Level
1 Bakery Categories Codeforces Codeforces Round #368 (Div. 2) 1
2 Young Physicist Categories Codeforces Codeforces Beta Round #63 (Div. 2) 1
3 Network Connections Categories UVA 1
4 A Node Too Far Categories UVA 1
5 Travel Categories TJU 1
6 The Decoder Categories UVA 1
7 Graph Connectivity Categories UVA 1
8 NP-Hard Problem Categories Codeforces Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2) 1
9 Dijkstra? Categories Codeforces Codeforces Alpha Round #20 (Codeforces format) 1
10 Searching the Graph Categories SPOJ 1
11 New Year Transportation Categories Codeforces Good Bye 2014 1
12 Pouring water Categories SPOJ 1
13 Matrix Transpose Categories UVA 1
14 Greatest K-Palindrome Substring Categories Live Archive 2008 Asia - Jakarta 1
15 Road Construction Categories Codeforces Codeforces Round #192 (Div. 2) 1
16 Two Buttons Categories Codeforces Codeforces Round #295 (Div. 2) 1
17 Luggage Categories UVA 1
18 The Dueling Philosophers Problem Categories Live Archive 2012 North America - Mid-Atlantic USA 1
19 Easy Problem from Rujia Liu? Categories UVA 1
20 Ice Skating Categories Codeforces Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) 1
21 Binary Numbers Categories TJU 1
22 Party Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only) 1
23 As Long as I Learn, I Live Categories UVA 2
24 Topological Sorting Categories Timus 2
25 Numbering Paths Categories UVA 2
26 Mr. Kitayuta's Colorful Graph Categories Codeforces Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) 2
27 Reposts Categories Codeforces VK Cup 2015 - Qualification Round 1 2
28 Wedding of Sultan Categories UVA 2
29 05-2 Rendezvous Categories UVA 2
30 The Two Routes Categories Codeforces Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2) 2
31 The Child and Toy Categories Codeforces Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) 2
32 Bear and Three Musketeers Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 2
33 Strongly Connected City Categories Codeforces Bayan 2015 Contest Warm Up 2
34 Fox And Names Categories Codeforces Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) 2
35 New Year Permutation Categories Codeforces Good Bye 2014 2
36 Bear and Forgotten Tree 3 Categories Codeforces VK Cup 2016 - Round 1 2
37 True Friends Categories SPOJ 2
38 Checkposts Categories Codeforces Codeforces Round #244 (Div. 2) 2
39 Catenyms Categories PKU 2
40 New Reform Categories Codeforces Codeforces Round #346 (Div. 2) 3
41 Colorful Graph Categories Codeforces Codeforces Round #151 (Div. 2) 3
42 Gargari and Permutations Categories Codeforces Codeforces Round #264 (Div. 2) 3
43 Football Categories Codeforces RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1) 3
44 Hongcow Builds A Nation Categories Codeforces Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) 3
45 Valera and Elections Categories Codeforces Codeforces Round #216 (Div. 2) 3
46 AlmostBipartiteMatching Categories TopCoder TCCC06 Wildcard - Div1 easy] (10135) 3
47 Network Topology Categories Codeforces Croc Champ 2013 - Round 1 3
48 Unbearable Controversy of Being Categories Codeforces Codeforces Round #277.5 (Div. 2) 3
49 Ping-Pong (Easy Version) Categories Codeforces Codeforces Round #189 (Div. 2) 3
50 Greg and Graph Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 3
51 Cryptography Categories A2 Online Judge 3
52 Misha and Forest Categories Codeforces Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1) 3
53 Cthulhu Categories Codeforces Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only) 3
54 Longtail Hedgehog Categories Codeforces Codeforces Round #338 (Div. 2) 3
55 Journey Categories Codeforces Codeforces Round #374 (Div. 2) 3
56 Searching for Graph Categories Codeforces Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) 3
57 Two Rounds Categories Timus 3
58 Graph and String Categories Codeforces AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2) 3
59 Students and Shoelaces Categories Codeforces Codeforces Beta Round #94 (Div. 2 Only) 3
60 Going in Cycle!! Categories UVA 3
61 Road Map Categories Codeforces Codeforces Beta Round #34 (Div. 2) 4
62 Union of Doubly Linked Lists Categories Codeforces 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) 4
63 Ring road Categories Codeforces Codeforces Beta Round #24 4
64 Resort Categories Codeforces Codeforces Round #203 (Div. 2) 4
65 Subway Categories Codeforces Codeforces Beta Round #95 (Div. 2) 4
66 King's Path Categories Codeforces Codeforces Round #149 (Div. 2) 4
67 Eternal Victory Categories Codeforces Codeforces Beta Round #57 (Div. 2) 4
68 Ivan's Car Categories Timus 4
69 Roads in Berland Categories Codeforces Codeforces Beta Round #25 (Div. 2 Only) 4
70 Destroying Roads Categories Codeforces Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2) 4
71 Garland Categories Codeforces Codeforces Round #398 (Div. 2) 4
72 The Scrooge Co Problem Categories UVA 4
73 The Explosion Categories SPOJ 4
74 Roads not only in Berland Categories Codeforces Codeforces Beta Round #25 (Div. 2 Only) 4
75 Gincana Categories SPOJ Brazil 4
76 Graph Cut Categories SPOJ 4
77 Two Companies Categories CodeChef 4
78 Paths and Trees Categories Codeforces Codeforces Round #303 (Div. 2) 4
79 Instant View of Big Bang Categories UVA 4
80 Simple Dijkstras algorithm Categories SPOJ 4
81 Restore Graph Categories Codeforces Codeforces Round #237 (Div. 2) 4
82 Alyona and a tree Categories Codeforces Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2) 4
83 Lazy Student Categories Codeforces Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2) 4
84 Dorm Water Supply Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 4
85 The Forrest for the Trees Categories Live Archive 1997 North America - Greater NY 4
86 Directed Roads Categories Codeforces Codeforces Round #369 (Div. 2) 4
87 New Year Santa Network Categories Codeforces Good Bye 2014 4
88 Jzzhu and Cities Categories Codeforces Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2) 4
89 Connecting Universities Categories Codeforces Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2) 4
90 Regular Bridge Categories Codeforces Codeforces Round #306 (Div. 2) 4
91 Cow Program Categories Codeforces Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) 4
92 Dream Categories UVA 4
93 Graph Coloring Categories Live Archive 1995 Europe - Southwestern 5
94 pSort Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 5
95 Robot Rapping Results Report Categories Codeforces CROC 2016 - Elimination Round 5
96 Missile Silos Categories Codeforces Codeforces Round #103 (Div. 2) 5
97 Two Paths Categories Codeforces Codeforces Beta Round #14 (Div. 2) 5
98 Mahmoud and a Dictionary Categories Codeforces Codeforces Round #396 (Div. 2) 5
99 Fox and Minimal path Categories Codeforces Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2) 5
100 Dungeons and Candies Categories Codeforces Zepto Code Rush 2014 5
101 Dima and Bacteria Categories Codeforces Codeforces Round #234 (Div. 2) 5
102 Weird journey Categories Codeforces Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2) 5
103 Breaking Good Categories Codeforces Codeforces Round #287 (Div. 2) 5
104 Mail Stamps Categories Codeforces Codeforces Beta Round #29 (Div. 2, Codeforces format) 5
105 Inna and Dima Categories Codeforces Codeforces Round #220 (Div. 2) 5
106 Cycles Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 5
107 Block Tower Categories Codeforces Codeforces Round #191 (Div. 2) 5
108 Complete The Graph Categories Codeforces Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2) 5
109 Volleyball Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only) 5
110 Cycle in Graph Categories Codeforces Codeforces Round #161 (Div. 2) 5
111 Three States Categories Codeforces Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2) 5
112 Clique in the Divisibility Graph Categories Codeforces VK Cup 2015 - Finals, online mirror 5
113 Vitaly and Cycle Categories Codeforces Codeforces Round #311 (Div. 2) 5
114 Yaroslav and Time Categories Codeforces Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2) 5
115 Obsession with Robots Categories Codeforces Codeforces Beta Round #8 5
116 Help General Categories Codeforces Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) 5
117 A Simple Task Categories Codeforces Codeforces Beta Round #11 5
118 Minimum spanning tree for each edge Categories Codeforces Educational Codeforces Round 3 5
119 Cycle Categories Codeforces Codeforces Beta Round #88 5
120 Partial Teacher Categories Codeforces Manthan 2011 6
121 Triangles Categories Codeforces Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2) 6
122 Mr. Kitayuta's Technology Categories Codeforces Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) 6
123 Color the Map Categories Live Archive 2004 Asia - Ehime 6
124 Legacy Categories Codeforces Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2) 6
125 Information Graph Categories Codeforces Codeforces Round #266 (Div. 2) 6
126 Party Categories Codeforces ABBYY Cup 2.0 - Easy 6
127 Love Triangles Categories Codeforces Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) 6
128 Bertown roads Categories Codeforces Codeforces Beta Round #89 (Div. 2) 6
129 Polycarp and Hay Categories Codeforces Codeforces Round #346 (Div. 2) 6
130 Police Station Categories Codeforces Codeforces Round #130 (Div. 2) 6
131 World Tour Categories Codeforces Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2) 6
132 Flawed Flow Categories Codeforces Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2) 6
133 Party Categories Codeforces ABBYY Cup 2.0 - Easy 6
134 Fedor and Essay Categories Codeforces Codeforces Round #267 (Div. 2) 6
135 Tanya and Password Categories Codeforces Codeforces Round #288 (Div. 2) 6
136 Table Compression Categories Codeforces Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) 6
137 A Pair of Graphs Categories Live Archive 2008 Asia - Hangzhou 6
138 Vanya and Treasure Categories Codeforces Codeforces Round #355 (Div. 2) 6
139 Dispute Categories Codeforces Codeforces Round #149 (Div. 2) 6
140 Join two kingdoms Categories UVA 6
141 Strictly Positive Matrix Categories Codeforces Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) 6
142 Leha and another game about graph Categories Codeforces Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) 6
143 Party Categories Codeforces Codeforces Beta Round #23 6
144 Shortest Path Categories A2 Online Judge 6
145 Military patrol Categories SPOJ 6
146 Hydra Categories Codeforces Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2) 6
147 Greg and Friends Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 6
148 3-cycles Categories Codeforces Codeforces Beta Round #40 (Div. 2) 6
149 Work Group Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 6
150 CompilingDecksWithJokers Categories TopCoder SRM 380 - Div1 medium - Div2 hard] (10802) 6
151 The Road to Berland is Paved With Good Intentions Categories Codeforces Codeforces Round #141 (Div. 2) 6
152 System Administrator Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 6
153 Double Profiles Categories Codeforces Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) 6
154 The Great Mixing Categories Codeforces Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2) 6
155 Ring Road 2 Categories Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 6
156 Increasing Shortest Path Categories A2 Online Judge 6
157 Sereja and the Arrangement of Numbers Categories Codeforces Codeforces Round #215 (Div. 1) & Codeforces Round #215 (Div. 2) 6
158 In Defence of a Garden Categories Live Archive 2002 North America - Mid-Atlantic USA 6
159 Vladik and Favorite Game Categories Codeforces Codeforces Round #416 (Div. 2) 6
160 Shortest Path Categories Codeforces Codeforces Beta Round #55 (Div. 2) 7
161 Non-Stop Travel Categories Live Archive 1995 North America - North Central NA 7
162 President and Roads Categories Codeforces Codeforces Round #Pi (Div. 2) 7
163 Gift Categories Codeforces All-Ukrainian School Olympiad in Informatics 7
164 Square Root of Permutation Categories Codeforces Educational Codeforces Round 4 7
165 Ski Base Categories Codeforces Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only) 7
166 Cactus Categories Codeforces Codeforces Round #143 (Div. 2) 7
167 Edges in MST Categories Codeforces Codeforces Round #111 (Div. 2) 7
168 Graph Reconstruction Categories Codeforces Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2) 7
169 Build String Categories Codeforces Codeforces Round #147 (Div. 2) 7
170 Nudist Beach Categories Codeforces Codeforces Round #309 (Div. 1) 7
171 Ant Man Categories Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 7
172 Data Center Drama Categories Codeforces Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) 7
173 Black and White Tree Categories Codeforces Codeforces Round #158 (Div. 2) 7
174 Three-dimensional Turtle Super Computer Categories Codeforces VK Cup 2016 - Qualification Round 2 7
175 Variable, or There and Back Again Categories Codeforces VK Cup 2012 Round 3 7
176 Fools and Foolproof Roads Categories Codeforces Codeforces Round #212 (Div. 2) 7
177 Dima and Horses Categories Codeforces Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1) 7
178 Ralph and Mushrooms Categories Codeforces Codeforces Round #447 (Div. 2) 7
179 Snake Categories Codeforces Codeforces Round #139 (Div. 2) 7
180 Pursuit For Artifacts Categories Codeforces Educational Codeforces Round 10 7
181 Bug in Code Categories Codeforces Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) 7
182 Case of Computer Network Categories Codeforces Codeforces Round #310 (Div. 1) 7
183 Envy Categories Codeforces Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2) 7
184 Valera and Swaps Categories Codeforces Codeforces Round #252 (Div. 2) 7
185 Mike and Fish Categories Codeforces Codeforces Round #305 (Div. 1) 7
186 Lovely Matrix Categories Codeforces Codeforces Round #168 (Div. 1) 7
187 Okabe and City Categories Codeforces Codeforces Round #420 (Div. 2) 7
188 Counter Attack Categories Codeforces Codeforces Round #120 (Div. 2) 7
189 Knights Categories Codeforces Codeforces Beta Round #33 (Codeforces format) 7
190 Bear and Forgotten Tree 2 Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 7
191 Graph Cutting Categories Codeforces Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) 7
192 Ksenia and Pawns Categories Codeforces Codeforces Round #224 (Div. 2) 7
193 Lucky Country Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 7
194 Wrong Floyd Categories Codeforces Codeforces Round #203 (Div. 2) 7
195 Chessboard Billiard Categories Codeforces Codeforces Beta Round #68 7
196 Idempotent functions Categories Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 7
197 President's Path Categories Codeforces Codeforces Round #241 (Div. 2) 7
198 Tourists Categories Codeforces Codeforces Round #278 (Div. 1) 8
199 Opening Portals Categories Codeforces Codeforces Round #124 (Div. 1) 8
200 Clues Categories Codeforces Codeforces Round #110 (Div. 1) 8
201 Points and Segments Categories Codeforces Codeforces Round #245 (Div. 1) 8
202 Balance Categories Codeforces Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2) 8
203 Mother of Dragons Categories Codeforces Codeforces Round #428 (Div. 2) 8
204 T-decomposition Categories Codeforces Codeforces Round #147 (Div. 2) 8
205 Playing on Graph Categories Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 8
206 Dominoes Categories Codeforces Codeforces Testing Round #5 8
207 Beads Categories Codeforces Codeforces Beta Round #8 8
208 Graph basics concepts Categories SPOJ 8
209 Tournament Categories Codeforces Codeforces Round #443 (Div. 1) & Codeforces Round #443 (Div. 2) 8
210 Magic Matrix Categories Codeforces Educational Codeforces Round 9 8
211 CNF 2 Categories Codeforces Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) 8
212 Swaps Categories Codeforces Codeforces Testing Round #3 8
213 Vladik and Entertaining Flags Categories Codeforces Codeforces Round #416 (Div. 2) 8
214 Scheme Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 8
215 Kingdom and its Cities Categories Codeforces Codeforces Round #339 (Div. 1) 8
216 Smile House Categories Codeforces Codeforces Testing Round #4 8
217 Trails and Glades Categories Codeforces VK Cup 2012 Finals, Practice Session 8
218 Take-off Ramps Categories Codeforces Codeforces Round #101 (Div. 2) 8
219 Quarrel Categories Codeforces Codeforces Beta Round #29 (Div. 2, Codeforces format) 8
220 Traveling Graph Categories Codeforces Codeforces Alpha Round #21 (Codeforces format) 8
221 Sereja and Tree Categories Codeforces Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2) 8
222 MST Company Categories Codeforces Codeforces Testing Round #2 8
223 FreeDiv Categories Codeforces Codeforces Beta Round #66 8
224 Tickets Categories Codeforces Codeforces Beta Round #26 (Codeforces format) 8
225 Petya and Pipes Categories Codeforces Codeforces Round #212 (Div. 2) 8
226 Clearing Up Categories Codeforces Codeforces Round #101 (Div. 2) 8
227 In Defence of a Garden Categories PKU 8
228 Interestring graph and Apples Categories Codeforces Codeforces Beta Round #9 (Div. 2 Only) 8
229 Guard Towers Categories Codeforces Yandex.Algorithm 2011 Round 1 8
230 Parcels Categories Codeforces Codeforces Round #274 (Div. 1) 8
231 Suggested Friends Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 8
232 BerDonalds Categories Codeforces Codeforces Round #163 (Div. 2) 8
233 Flights Categories Codeforces Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) 8
234 Widget Library Categories Codeforces Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) 8
235 Cycling City Categories Codeforces Codeforces Round #295 (Div. 1) 9
236 Metro Scheme Categories Codeforces Codeforces Round #121 (Div. 1) 9
237 Game with Points Categories Codeforces Testing Round #9 9
238 Winning Strategy Categories Codeforces Yandex.Algorithm 2011 Finals 9
239 Dima and Kicks Categories Codeforces Codeforces Round #208 (Div. 2) 9
240 Hercule Poirot Problem Categories Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 9
241 Edge coloring of bipartite graph Categories Codeforces Educational Codeforces Round 2 9
242 Two Paths Categories Codeforces Codeforces Beta Round #36 9
243 Pairs Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 9
244 DFS Categories Codeforces Lyft Level 5 Challenge 2018 - Final Round 9
245 Levko and Game Categories Codeforces Codeforces Round #210 (Div. 1) 9
246 Evacuation Categories Codeforces Codeforces Beta Round #70 (Div. 2) 9
247 Ivan the Fool VS Gorynych the Dragon Categories Codeforces School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) 9
248 Big Problems for Organizers Categories Codeforces RCC 2014 Warmup (Div. 1) 9
249 Grocer's Problem Categories Codeforces Codeforces Beta Round #75 (Div. 1 Only) 9
250 Theft of Blueprints Categories Codeforces Codeforces Round #193 (Div. 2) 9
251 Maze Categories Codeforces Codeforces Beta Round #92 (Div. 1 Only) 9
252 Trial for Chief Categories Codeforces Codeforces Beta Round #37 9
253 Wormhouse Categories Codeforces Codeforces Beta Round #58 9
254 Meeting Her Categories Codeforces Codeforces Round #148 (Div. 1) 9
255 Track Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only) 9
256 Battlefield Categories Codeforces Codeforces Round #117 (Div. 2) 9
257 Pentagon Categories Codeforces Codeforces Beta Round #48 9
258 Travelling Through the Snow Queen's Kingdom Categories Codeforces Codeforces Round #359 (Div. 1) 9
259 Garden Categories Codeforces Codeforces Round #108 (Div. 2) 9
260 Mike and code of a permutation Categories Codeforces Codeforces Round #410 (Div. 2) 9
261 Deputies Categories Codeforces Croc Champ 2012 - Round 1 9
262 Road Repairs Categories Codeforces Codeforces Round #145 (Div. 1, ACM-ICPC Rules) 9
263 Caterpillar Categories Codeforces Codeforces Beta Round #48 9
264 Sagheer and Kindergarten Categories Codeforces Codeforces Round #417 (Div. 2) 9
265 The Classic Problem Categories Codeforces Codeforces Round #265 (Div. 1) 9
266 Graph Game Categories Codeforces Codeforces Round #146 (Div. 1) 9
267 Wilbur and Strings Categories Codeforces Codeforces Round #331 (Div. 2) 9
268 Mister B and Flight to the Moon Categories Codeforces Codeforces Round #421 (Div. 1) 9
269 Island Puzzle Categories Codeforces 8VC Venture Cup 2016 - Final Round 10
270 Spider Categories Codeforces Codeforces Round #138 (Div. 1) 10
271 Dynamic Programming Categories A2 Online Judge 10
272 Greedy Petya Categories Codeforces April Fools Day Contest 2013 10
273 Deja Vu Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 10
274 Leaders Categories Codeforces Yandex.Algorithm 2011 Finals 10
275 Restore the Tree Categories Codeforces Codeforces Round #440 (Div. 1, based on Technocup 2018 Elimination Round 2) 10
276 Planar Graph Categories Codeforces Codeforces Round #138 (Div. 1) 10
277 The Overdosing Ubiquity Categories Codeforces Codeforces Round #439 (Div. 2) 10
278 ALT Categories Codeforces Codeforces Round #406 (Div. 1) 10
279 Chain Letter Categories Codeforces Friday the 13th, Programmers Day 10
280 Doe Graphs Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 10
281 Privatization Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 10
282 Shake It! Categories Codeforces Codeforces Round #431 (Div. 1) 10
283 BerPaint Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 10
284 Baldman and the military Categories Codeforces Codeforces Beta Round #41 10
285 Gnomes of Might and Magic Categories Codeforces Codeforces Round #115 10
286 Road Problem Categories Codeforces School Team Contest #3 (Winter Computer School 2010/11) 10
287 Bear and Chemistry Categories Codeforces VK Cup 2016 - Round 1 10
288 Escaping on Beaveractor Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 10