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