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graphs problems
Problem Name Online Judge Year Contest Difficulty Level
1 Kefa and Park Categories Codeforces Codeforces Round #321 (Div. 2) 1
2 Searching the Graph Categories SPOJ 1
3 Binary Numbers Categories TJU 1
4 Dijkstra? Categories Codeforces Codeforces Alpha Round #20 (Codeforces format) 1
5 Road Construction Categories Codeforces Codeforces Round #192 (Div. 2) 1
6 Bakery Categories Codeforces Codeforces Round #368 (Div. 2) 1
7 Greatest K-Palindrome Substring Categories Live Archive 2008 Asia - Jakarta 1
8 Young Physicist Categories Codeforces Codeforces Beta Round #63 (Div. 2) 1
9 Easy Problem from Rujia Liu? Categories UVA 1
10 Two Buttons Categories Codeforces Codeforces Round #295 (Div. 2) 1
11 NP-Hard Problem Categories Codeforces Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2) 1
12 The Dueling Philosophers Problem Categories Live Archive 2012 North America - Mid-Atlantic USA 1
13 Hotels Along the Croatian Coast Categories SPOJ 1
14 Network Connections Categories UVA 1
15 Party Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only) 1
16 The Decoder Categories UVA 1
17 A Node Too Far Categories UVA 1
18 Luggage Categories UVA 1
19 Travel Categories TJU 1
20 Graph Connectivity Categories UVA 1
21 New Year Transportation Categories Codeforces Good Bye 2014 1
22 Ice Skating Categories Codeforces Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) 1
23 Pouring water Categories SPOJ 1
24 The Two Routes Categories Codeforces Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2) 2
25 Strongly Connected City Categories Codeforces Bayan 2015 Contest Warm Up 2
26 Matrix Transpose Categories UVA 2
27 Bear and Forgotten Tree 3 Categories Codeforces VK Cup 2016 - Round 1 2
28 Bear and Three Musketeers Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 2
29 New Year Permutation Categories Codeforces Good Bye 2014 2
30 Fox And Names Categories Codeforces Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) 2
31 True Friends Categories SPOJ 2
32 Checkposts Categories Codeforces Codeforces Round #244 (Div. 2) 2
33 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
34 Topological Sorting Categories Timus 2
35 Numbering Paths Categories UVA 2
36 Reposts Categories Codeforces VK Cup 2015 - Qualification Round 1 2
37 Catenyms Categories PKU 2
38 05-2 Rendezvous Categories UVA 2
39 The Child and Toy Categories Codeforces Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) 2
40 Longtail Hedgehog Categories Codeforces Codeforces Round #338 (Div. 2) 3
41 Colorful Graph Categories Codeforces Codeforces Round #151 (Div. 2) 3
42 As Long as I Learn, I Live Categories UVA 3
43 Graph and String Categories Codeforces AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2) 3
44 Hongcow Builds A Nation Categories Codeforces Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) 3
45 Cthulhu Categories Codeforces Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only) 3
46 Two Rounds Categories Timus 3
47 Wedding of Sultan Categories UVA 3
48 Going in Cycle!! Categories UVA 3
49 New Reform Categories Codeforces Codeforces Round #346 (Div. 2) 3
50 Cryptography Categories A2 Online Judge 3
51 Valera and Elections Categories Codeforces Codeforces Round #216 (Div. 2) 3
52 Network Topology Categories Codeforces Croc Champ 2013 - Round 1 3
53 Gargari and Permutations Categories Codeforces Codeforces Round #264 (Div. 2) 3
54 Journey Categories Codeforces Codeforces Round #374 (Div. 2) 3
55 Football Categories Codeforces RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1) 3
56 Ping-Pong (Easy Version) Categories Codeforces Codeforces Round #189 (Div. 2) 3
57 Misha and Forest Categories Codeforces Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1) 3
58 Unbearable Controversy of Being Categories Codeforces Codeforces Round #277.5 (Div. 2) 3
59 AlmostBipartiteMatching Categories TopCoder TCCC06 Wildcard - Div1 easy] (10135) 3
60 Students and Shoelaces Categories Codeforces Codeforces Beta Round #94 (Div. 2 Only) 3
61 Greg and Graph Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 3
62 Searching for Graph Categories Codeforces Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) 3
63 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
64 Subway Categories Codeforces Codeforces Beta Round #95 (Div. 2) 4
65 Eternal Victory Categories Codeforces Codeforces Beta Round #57 (Div. 2) 4
66 Resort Categories Codeforces Codeforces Round #203 (Div. 2) 4
67 Gincana Categories SPOJ Brazil 4
68 Connecting Universities Categories Codeforces Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2) 4
69 Two Companies Categories CodeChef 4
70 Lazy Student Categories Codeforces Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2) 4
71 Roads not only in Berland Categories Codeforces Codeforces Beta Round #25 (Div. 2 Only) 4
72 Paths and Trees Categories Codeforces Codeforces Round #303 (Div. 2) 4
73 Graph Cut Categories SPOJ 4
74 Instant View of Big Bang Categories UVA 4
75 Ivan's Car Categories Timus 4
76 Cow Program Categories Codeforces Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) 4
77 Party Categories A2 Online Judge 4
78 Restore Graph Categories Codeforces Codeforces Round #237 (Div. 2) 4
79 King's Path Categories Codeforces Codeforces Round #149 (Div. 2) 4
80 The Forrest for the Trees Categories Live Archive 1997 North America - Greater NY 4
81 New Year Santa Network Categories Codeforces Good Bye 2014 4
82 Jzzhu and Cities Categories Codeforces Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2) 4
83 Garland Categories Codeforces Codeforces Round #398 (Div. 2) 4
84 Dream Categories UVA 4
85 Dorm Water Supply Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 4
86 Regular Bridge Categories Codeforces Codeforces Round #306 (Div. 2) 4
87 The Explosion Categories SPOJ 4
88 Road Map Categories Codeforces Codeforces Beta Round #34 (Div. 2) 4
89 Simple Dijkstras algorithm Categories SPOJ 4
90 Ring road Categories Codeforces Codeforces Beta Round #24 4
91 Alyona and a tree Categories Codeforces Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2) 4
92 Directed Roads Categories Codeforces Codeforces Round #369 (Div. 2) 4
93 Reachability from the Capital Categories Codeforces Codeforces Round #490 (Div. 3) 4
94 The Scrooge Co Problem Categories UVA 4
95 Roads in Berland Categories Codeforces Codeforces Beta Round #25 (Div. 2 Only) 4
96 Destroying Roads Categories Codeforces Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2) 4
97 Mail Stamps Categories Codeforces Codeforces Beta Round #29 (Div. 2, Codeforces format) 5
98 Missile Silos Categories Codeforces Codeforces Round #103 (Div. 2) 5
99 Obsession with Robots Categories Codeforces Codeforces Beta Round #8 5
100 Clique in the Divisibility Graph Categories Codeforces VK Cup 2015 - Finals, online mirror 5
101 Mahmoud and a Dictionary Categories Codeforces Codeforces Round #396 (Div. 2) 5
102 Yaroslav and Time Categories Codeforces Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2) 5
103 Three States Categories Codeforces Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2) 5
104 Minimum spanning tree for each edge Categories Codeforces Educational Codeforces Round 3 5
105 Weird journey Categories Codeforces Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2) 5
106 Critical Links Categories Live Archive 1997 Europe - Southeastern 5
107 Volleyball Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only) 5
108 Vitaly and Cycle Categories Codeforces Codeforces Round #311 (Div. 2) 5
109 Cycles Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 5
110 Graph Coloring Categories Live Archive 1995 Europe - Southwestern 5
111 Robot Rapping Results Report Categories Codeforces CROC 2016 - Elimination Round 5
112 Fox and Minimal path Categories Codeforces Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2) 5
113 A Simple Task Categories Codeforces Codeforces Beta Round #11 5
114 Complete The Graph Categories Codeforces Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2) 5
115 Dungeons and Candies Categories Codeforces Zepto Code Rush 2014 5
116 Inna and Dima Categories Codeforces Codeforces Round #220 (Div. 2) 5
117 Dima and Bacteria Categories Codeforces Codeforces Round #234 (Div. 2) 5
118 pSort Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 5
119 Breaking Good Categories Codeforces Codeforces Round #287 (Div. 2) 5
120 Two Paths Categories Codeforces Codeforces Beta Round #14 (Div. 2) 5
121 Help General Categories Codeforces Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) 5
122 Cycle Categories Codeforces Codeforces Beta Round #88 5
123 Block Tower Categories Codeforces Codeforces Round #191 (Div. 2) 5
124 Cycle in Graph Categories Codeforces Codeforces Round #161 (Div. 2) 5
125 Strictly Positive Matrix Categories Codeforces Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) 6
126 Greg and Friends Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 6
127 Color the Map Categories Live Archive 2004 Asia - Ehime 6
128 Triangles Categories Codeforces Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2) 6
129 Party Categories Codeforces ABBYY Cup 2.0 - Easy 6
130 Bertown roads Categories Codeforces Codeforces Beta Round #89 (Div. 2) 6
131 Military patrol Categories SPOJ 6
132 Legacy Categories Codeforces Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2) 6
133 Partial Teacher Categories Codeforces Manthan 2011 6
134 Work Group Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 6
135 Mr. Kitayuta's Technology Categories Codeforces Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) 6
136 Party Categories Codeforces ABBYY Cup 2.0 - Easy 6
137 Police Station Categories Codeforces Codeforces Round #130 (Div. 2) 6
138 Sereja and the Arrangement of Numbers Categories Codeforces Codeforces Round #215 (Div. 1) & Codeforces Round #215 (Div. 2) 6
139 3-cycles Categories Codeforces Codeforces Beta Round #40 (Div. 2) 6
140 A Pair of Graphs Categories Live Archive 2008 Asia - Hangzhou 6
141 Dispute Categories Codeforces Codeforces Round #149 (Div. 2) 6
142 System Administrator Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 6
143 World Tour Categories Codeforces Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2) 6
144 In Defence of a Garden Categories Live Archive 2002 North America - Mid-Atlantic USA 6
145 Shortest Path Categories A2 Online Judge 6
146 Flawed Flow Categories Codeforces Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2) 6
147 Ring Road 2 Categories Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 6
148 Leha and another game about graph Categories Codeforces Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) 6
149 Vanya and Treasure Categories Codeforces Codeforces Round #355 (Div. 2) 6
150 Information Graph Categories Codeforces Codeforces Round #266 (Div. 2) 6
151 Polycarp and Hay Categories Codeforces Codeforces Round #346 (Div. 2) 6
152 Hydra Categories Codeforces Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2) 6
153 Double Profiles Categories Codeforces Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) 6
154 Table Compression Categories Codeforces Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) 6
155 Love Triangles Categories Codeforces Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) 6
156 Party Categories Codeforces Codeforces Beta Round #23 6
157 CompilingDecksWithJokers Categories TopCoder SRM 380 - Div1 medium - Div2 hard] (10802) 6
158 The Road to Berland is Paved With Good Intentions Categories Codeforces Codeforces Round #141 (Div. 2) 6
159 Fedor and Essay Categories Codeforces Codeforces Round #267 (Div. 2) 6
160 Increasing Shortest Path Categories A2 Online Judge 6
161 Tanya and Password Categories Codeforces Codeforces Round #288 (Div. 2) 6
162 Join two kingdoms Categories UVA 6
163 The Great Mixing Categories Codeforces Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2) 6
164 Vladik and Favorite Game Categories Codeforces Codeforces Round #416 (Div. 2) 6
165 Ski Base Categories Codeforces Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only) 7
166 Pursuit For Artifacts Categories Codeforces Educational Codeforces Round 10 7
167 Lovely Matrix Categories Codeforces Codeforces Round #168 (Div. 1) 7
168 Nudist Beach Categories Codeforces Codeforces Round #309 (Div. 1) 7
169 Data Center Drama Categories Codeforces Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) 7
170 Graph Cutting Categories Codeforces Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) 7
171 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
172 Edges in MST Categories Codeforces Codeforces Round #111 (Div. 2) 7
173 Valera and Swaps Categories Codeforces Codeforces Round #252 (Div. 2) 7
174 Ksenia and Pawns Categories Codeforces Codeforces Round #224 (Div. 2) 7
175 Bear and Forgotten Tree 2 Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 7
176 Wrong Floyd Categories Codeforces Codeforces Round #203 (Div. 2) 7
177 Case of Computer Network Categories Codeforces Codeforces Round #310 (Div. 1) 7
178 Cactus Categories Codeforces Codeforces Round #143 (Div. 2) 7
179 Build String Categories Codeforces Codeforces Round #147 (Div. 2) 7
180 Mike and Fish Categories Codeforces Codeforces Round #305 (Div. 1) 7
181 Variable, or There and Back Again Categories Codeforces VK Cup 2012 Round 3 7
182 President's Path Categories Codeforces Codeforces Round #241 (Div. 2) 7
183 Knights Categories Codeforces Codeforces Beta Round #33 (Codeforces format) 7
184 Idempotent functions Categories Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 7
185 Ant Man Categories Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 7
186 Ralph and Mushrooms Categories Codeforces Codeforces Round #447 (Div. 2) 7
187 Non-Stop Travel Categories Live Archive 1995 North America - North Central NA 7
188 Square Root of Permutation Categories Codeforces Educational Codeforces Round 4 7
189 Snake Categories Codeforces Codeforces Round #139 (Div. 2) 7
190 Lucky Country Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 7
191 Chessboard Billiard Categories Codeforces Codeforces Beta Round #68 7
192 President and Roads Categories Codeforces Codeforces Round #Pi (Div. 2) 7
193 Black and White Tree Categories Codeforces Codeforces Round #158 (Div. 2) 7
194 Counter Attack Categories Codeforces Codeforces Round #120 (Div. 2) 7
195 Envy Categories Codeforces Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2) 7
196 Okabe and City Categories Codeforces Codeforces Round #420 (Div. 2) 7
197 Dima and Horses Categories Codeforces Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1) 7
198 Shortest Path Categories Codeforces Codeforces Beta Round #55 (Div. 2) 7
199 Graph Reconstruction Categories Codeforces Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2) 7
200 Fools and Foolproof Roads Categories Codeforces Codeforces Round #212 (Div. 2) 7
201 Gift Categories Codeforces All-Ukrainian School Olympiad in Informatics 7
202 Three-dimensional Turtle Super Computer Categories Codeforces VK Cup 2016 - Qualification Round 2 7
203 Flights Categories Codeforces Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) 8
204 Opening Portals Categories Codeforces Codeforces Round #124 (Div. 1) 8
205 Petya and Pipes Categories Codeforces Codeforces Round #212 (Div. 2) 8
206 Mother of Dragons Categories Codeforces Codeforces Round #428 (Div. 2) 8
207 Graph basics concepts Categories SPOJ 8
208 BerDonalds Categories Codeforces Codeforces Round #163 (Div. 2) 8
209 T-decomposition Categories Codeforces Codeforces Round #147 (Div. 2) 8
210 Swaps Categories Codeforces Codeforces Testing Round #3 8
211 Quarrel Categories Codeforces Codeforces Beta Round #29 (Div. 2, Codeforces format) 8
212 Traveling Graph Categories Codeforces Codeforces Alpha Round #21 (Codeforces format) 8
213 In Defence of a Garden Categories PKU 8
214 Parcels Categories Codeforces Codeforces Round #274 (Div. 1) 8
215 Smile House Categories Codeforces Codeforces Testing Round #4 8
216 Tournament Categories Codeforces Codeforces Round #443 (Div. 1) & Codeforces Round #443 (Div. 2) 8
217 Vladik and Entertaining Flags Categories Codeforces Codeforces Round #416 (Div. 2) 8
218 Dominoes Categories Codeforces Codeforces Testing Round #5 8
219 Tickets Categories Codeforces Codeforces Beta Round #26 (Codeforces format) 8
220 Beads Categories Codeforces Codeforces Beta Round #8 8
221 Interestring graph and Apples Categories Codeforces Codeforces Beta Round #9 (Div. 2 Only) 8
222 Take-off Ramps Categories Codeforces Codeforces Round #101 (Div. 2) 8
223 FreeDiv Categories Codeforces Codeforces Beta Round #66 8
224 Balance Categories Codeforces Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2) 8
225 Tourists Categories Codeforces Codeforces Round #278 (Div. 1) 8
226 Trails and Glades Categories Codeforces VK Cup 2012 Finals, Practice Session 8
227 Points and Segments Categories Codeforces Codeforces Round #245 (Div. 1) 8
228 MST Company Categories Codeforces Codeforces Testing Round #2 8
229 Guard Towers Categories Codeforces Yandex.Algorithm 2011 Round 1 8
230 Scheme Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 8
231 Clearing Up Categories Codeforces Codeforces Round #101 (Div. 2) 8
232 Magic Matrix Categories Codeforces Educational Codeforces Round 9 8
233 Playing on Graph Categories Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 8
234 Widget Library Categories Codeforces Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) 8
235 Kingdom and its Cities Categories Codeforces Codeforces Round #339 (Div. 1) 8
236 Suggested Friends Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 8
237 CNF 2 Categories Codeforces Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) 8
238 Clues Categories Codeforces Codeforces Round #110 (Div. 1) 8
239 Sereja and Tree Categories Codeforces Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2) 8
240 Mister B and Flight to the Moon Categories Codeforces Codeforces Round #421 (Div. 1) 9
241 Evacuation Categories Codeforces Codeforces Beta Round #70 (Div. 2) 9
242 Trial for Chief Categories Codeforces Codeforces Beta Round #37 9
243 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
244 Grocer's Problem Categories Codeforces Codeforces Beta Round #75 (Div. 1 Only) 9
245 Wormhouse Categories Codeforces Codeforces Beta Round #58 9
246 DFS Categories Codeforces Lyft Level 5 Challenge 2018 - Final Round 9
247 Maze Categories Codeforces Codeforces Beta Round #92 (Div. 1 Only) 9
248 Track Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only) 9
249 Pentagon Categories Codeforces Codeforces Beta Round #48 9
250 Game with Points Categories Codeforces Testing Round #9 9
251 Dima and Kicks Categories Codeforces Codeforces Round #208 (Div. 2) 9
252 The Classic Problem Categories Codeforces Codeforces Round #265 (Div. 1) 9
253 Pairs Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 9
254 Battlefield Categories Codeforces Codeforces Round #117 (Div. 2) 9
255 Garden Categories Codeforces Codeforces Round #108 (Div. 2) 9
256 Wilbur and Strings Categories Codeforces Codeforces Round #331 (Div. 2) 9
257 Meeting Her Categories Codeforces Codeforces Round #148 (Div. 1) 9
258 Caterpillar Categories Codeforces Codeforces Beta Round #48 9
259 Cycling City Categories Codeforces Codeforces Round #295 (Div. 1) 9
260 Deputies Categories Codeforces Croc Champ 2012 - Round 1 9
261 Levko and Game Categories Codeforces Codeforces Round #210 (Div. 1) 9
262 Mike and code of a permutation Categories Codeforces Codeforces Round #410 (Div. 2) 9
263 Theft of Blueprints Categories Codeforces Codeforces Round #193 (Div. 2) 9
264 Edge coloring of bipartite graph Categories Codeforces Educational Codeforces Round 2 9
265 Road Repairs Categories Codeforces Codeforces Round #145 (Div. 1, ACM-ICPC Rules) 9
266 Travelling Through the Snow Queen's Kingdom Categories Codeforces Codeforces Round #359 (Div. 1) 9
267 Big Problems for Organizers Categories Codeforces RCC 2014 Warmup (Div. 1) 9
268 Winning Strategy Categories Codeforces Yandex.Algorithm 2011 Finals 9
269 Sagheer and Kindergarten Categories Codeforces Codeforces Round #417 (Div. 2) 9
270 Two Paths Categories Codeforces Codeforces Beta Round #36 9
271 Hercule Poirot Problem Categories Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 9
272 Graph Game Categories Codeforces Codeforces Round #146 (Div. 1) 9
273 Metro Scheme Categories Codeforces Codeforces Round #121 (Div. 1) 9
274 Chain Letter Categories Codeforces Friday the 13th, Programmers Day 10
275 BerPaint Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 10
276 Leaders Categories Codeforces Yandex.Algorithm 2011 Finals 10
277 Spider Categories Codeforces Codeforces Round #138 (Div. 1) 10
278 Bear and Chemistry Categories Codeforces VK Cup 2016 - Round 1 10
279 Escaping on Beaveractor Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 10
280 Dynamic Programming Categories A2 Online Judge 10
281 Planar Graph Categories Codeforces Codeforces Round #138 (Div. 1) 10
282 The Overdosing Ubiquity Categories Codeforces Codeforces Round #439 (Div. 2) 10
283 Greedy Petya Categories Codeforces April Fools Day Contest 2013 10
284 Restore the Tree Categories Codeforces Codeforces Round #440 (Div. 1, based on Technocup 2018 Elimination Round 2) 10
285 Island Puzzle Categories Codeforces 8VC Venture Cup 2016 - Final Round 10
286 Deja Vu Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 10
287 Baldman and the military Categories Codeforces Codeforces Beta Round #41 10
288 ALT Categories Codeforces Codeforces Round #406 (Div. 1) 10
289 Road Problem Categories Codeforces School Team Contest #3 (Winter Computer School 2010/11) 10
290 Doe Graphs Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 10
291 Privatization Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 10
292 Gnomes of Might and Magic Categories Codeforces Codeforces Round #115 10
293 Shake It! Categories Codeforces Codeforces Round #431 (Div. 1) 10