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Problem set. Graph Theory Problems
Solved problems:
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ID
Title
Source
Authors
Difficulty
1004
Sightseeing Trip
Central European Olympiad in Informatics 1999
2688
581
1008
Image Encoding
USTU PhysTech Cup 2000
4265
366
1016
Cube on the Walk
USU Local Contest. 1999
1890
821
1022
Genealogical Tree
Autumn School Contest 2000
11002
142
1033
Labyrinth
Ural Championship 1999
6568
236
1035
Cross-stitch
Ural Championship 1999
1123
1369
1040
Airline Company
USU Championship 2000
1528
1001
1045
Funny Game
USU Local Contest. March 2000
2909
521
1056
Centers of the Net
NEERC 2000 Central Subregional
2746
551
1065
Frontier
NEERC 2000
1009
1410
1069
Prufer Code
USU Personal Contest 2001
2692
517
1072
Routing
USU Personal Contest 2001
2769
502
1076
Trash
1942
711
1077
Travelling Tours
1258
397
1080
Map Coloring
Winter Mathematical Festival Varna 2001
7261
190
1085
Meeting
Spring School Contest 2001
2180
625
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1823
710
1099
Work Scheduling
1012
1152
1106
Two Teams
Tetrahedron Team Online Contest May 2001
6764
74
1109
Conference
Bulgarian Online Contest September 2001
2001
250
1119
Metro
Autumn School Contest 2001
7190
70
1124
Mosaic
USU Championship 2001
1675
299
1128
Partition into Groups
USU Championship 2001
1210
412
1129
Door Painting
USU Championship 2001
1231
405
1136
Parliament
NEERC 2001 Central Subregional
5032
100
1137
Bus Routes
NEERC 2001 Central Subregional
1553
322
1145
Rope in the Labyrinth
DSAP Vietnam Online Contest November 2001
1406
356
1156
Two Rounds
Ural Championship 2001. Round 2
1525
328
1160
Network
NEERC 2001 Northern Subregional
3477
146
1162
Currency Exchange
NEERC 2001 Northern Subregional
2551
197
1176
Hyperchannels
USU Personal Contest 2002
1501
334
1182
Team Them Up!
NEERC 2001
972
515
1198
Jobbery
1063
489
1199
Mouse
132
3387
1205
By the Underground or by Foot?
USU Local Contest. March 2002
2122
237
1208
Legendary Teams Contest
USU Local Contest. March 2002
2359
213
1210
Kind Spirits
Autumn School Contest 2002
2983
170
1218
Episode N-th: The Jedi Tournament
USU Championship 2002
1566
323
1227
Rally Championship
NEERC 2002 Central Subregional
1679
302
1237
Evacuation Plan
NEERC 2002
508
986
1242
Werewolf
USU Personal Contest 2003
2888
177
1250
Sea Burial
USU Local Contest. March 2003
691
730
1254
Die Hard
USU Local Contest. March 2003
784
645
1270
Unicube
USU Championship 2003
205
2398
1271
Sailing Directions
USU Championship 2003
101
4646
1272
Non-Yekaterinburg Subway
USU Championship 2003
3489
147
1277
Cops and Thieves
NEERC 2003 Central Subregional
580
874
1280
Topological Sorting
NEERC 2003 Central Subregional
3634
142
1281
River Basin
NEERC 2003 Central Subregional
272
1829
1291
Gear-wheels
Spring School Contest 2004
1334
385
1301
Cube in Labyrinth
Ural Championship 1998
688
742
1314
Chase in Subway
Ural Championship 2004. Round 1
870
589
1315
MDPAR and MIIAR
Ural Championship 2004. Round 1
271
1845
1320
Graph Decomposition
Ural Championship 2004. Round 2
1793
287
1323
Classmates
Ural Championship 2004. Round 2
616
828
1325
Dirt
Ural Championship 2004. Round 2
953
538
1329
Galactic History
Autumn School Contest 2004
1125
459
1337
Bureaucracy
Autumn School Contest 2004
325
1555
1338
Automobiles
USU Championship 2004
282
1790
1339
Babies
USU Championship 2004
600
857
1358
Cables
Spring School Contest 2005
952
544
1361
Spaceology vs. Chronistics
Ural Championship 2005. Round 2
257
1960
1367
Top Secret
Ural Championship 2005. Round 2
165
2991
1379
Cups Transportation
Ural Championship 2005. Round 1
847
612
1392
Dreaming of Stars
673
768
1399
Economical Director
37
10231
1400
Cellular Characters
Autumn School Contest 2005
945
550
1416
Confidential
USU Championship 2005
1315
395
1419
Maps of the Island Worlds
USU Championship 2005
418
1223
1421
Credit Operations
Timus Top Coders: First Challenge
932
544
1434
Buses in Vasyuki
USU Personal Contest 2006
562
894
1441
From the History of Gringotts Bank
Ural Championship 2006
435
1142
1447
Portkey Network
Ural Championship 2006
503
991
1449
Credit Operations 2
Timus Top Coders: Second Challenge
329
1491
1450
Russian Pipelines
Timus Top Coders: Second Challenge
3294
153
1479
Scheduled Checking
Petrozavodsk Summer 2006. Ural+Orel Contest
99
4499
1487
Chinese Football
USU Championship 2006
373
1277
1500
Pass Licenses
NEERC 2006 Eastern Subregional
751
640
1505
Oil Transfer
NEERC 2006 Eastern Subregional
158
2900
1527
Bad Roads
Petrozavodsk Winter 2007. D.Gozman Contest
397
1171
1533
Fat Hobbits
USU Personal Contest 2007
469
992
1544
Classmates 3
Ural Championship 2007
365
1255
1557
Network Attack
Petrozavodsk Summer 2007. NSU Contest
245
1790
1569
Networking the “Iset”
USU Championship 2007
485
920
1575
Yekaterinburg Subway 2
Autumn School Contest 2007
520
858
1580
Dean's Debts
Autumn School Contest 2007
496
898
1610
Cactuses
Ural Championship 2008
208
2017
1623
Fractal Labyrinth
Petrozavodsk Winter 2008. ITMO Contest
126
3143
1630
Talisman
USU Championship 2008
405
1019
1641
Duties
Autumn School Contest 2008
824
505
1643
Attack of the Dark Fortress
Autumn School Contest 2008
979
426
1651
Shortest Subchain
NEERC 2008 Eastern Subregional
1213
344
1652
Banking Crisis
NEERC 2008 Eastern Subregional
144
2734
1664
Pipeline Transportation
Petrozavodsk Winter 2008. USU Contest
201
1975
1676
Mortal Kombat
Petrozavodsk Summer 2008. USU Contest
229
1737
1691
Algorithm Complexity
Petrozavodsk Winter 2009. USU Contest
121
3128
1699
Turning Turtles
Petrozavodsk Winter 2009. USU Contest
369
1081
1709
Penguin-Avia
Ural Championship 2009
2644
154
1721
Two Sides of the Same Coin
NEERC 2009 Eastern Subregional
668
579
1742
Team building
Petrozavodsk Summer 2009. Ufa SATU Contest
1233
309
1770
The Party of Ural Champions
Ural Championship 2010
208
1734
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1896
190
1833
Hopes of Rowing
Ural Championship 2011
161
2037
1837
Isenbaev's Number
Ural Championship 2011
5853
59
1847
Zamkadye
Petrozavodsk Summer 2010. USU Contest
67
4386
1882
Old Nokia
Ural Regional School Programming Contest 2011
112
2748
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
720
458
1905
Travel in Time
Ural Championship 2012
264
1129
1912
Titan Ruins: Passing through Walls
NEERC 2012 Eastern Subregional
233
1271
1930
Ivan's Car
Ural Regional School Programming Contest 2012
1849
166
1934
Black Spot
Ural FU Championship 2012
857
354
1966
Cycling Roads
Ural FU Personal Contest 2013
417
683
1980
Road to Investor
Ural Championship 2013
442
639
1982
Electrification Plan
Ural FU Championship 2013
2131
132
2013
Neither shaken nor stirred
NEERC 2014 Eastern Subregional
262
953
2017
Best of a bad lot
NEERC 2014 Eastern Subregional
180
1365
2030
Awesome Backup System
Ural Regional School Programming Contest 2014
499
508
2034
Caravans
Ural Regional School Programming Contest 2014
902
283
2038
Minimum Vertex Cover
Petrozavodsk Summer 2014. Ural FU Dandelion Contest
95
2448
2055
Urban Geography
Ural Championship 2015
152
1518
2093
All Roads Lead to Snowdrift
Ural FU Personal Contest 2014
151
1355
2113
Survive the flood
University academic school olympiad in informatics 2019
365
419
2127
Determinant of a Graph
Petrozavodsk Summer 2018. umnik_team Contest
31
3782
2128
Rubina's Solitaire
Later is better than never
139
1011
2132
Graph Decomposition. Version 2
Later is better than never
89
1521
2140
BitMazeCraft
Ural School Programming Contest 2019
114
1175
2147
City Building
Ural School Programming Contest 2019
66
1918
2155
Quadrocopter
Ural School Programming Contest 2020
105
1040
2159
Essay
Ural School Programming Contest 2021
37
1496
2169
City Building 2
Ural School Programming Contest 2022
23
2128
2174
Dualism of Numbers
Ural School Programming Contest 2023
38
879
2180
Need More Tasks
Ural School Programming Contest 2023
14
1757
2187
Need More Gold
Ural School Programming Contest 2024
8
2342
2192
My Grandfather
ICPC Ural Regional Contest Qualifier 2022
21
1362
2195
Binary Trees
ICPC Ural Regional Contest Qualifier 2023
10
2110
2198
Deep Understanding
ICPC Ural Regional Contest Qualifier 2024
20
1404
Solved problems:
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