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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
2682
582
1008
Image Encoding
USTU PhysTech Cup 2000
4265
366
1016
Cube on the Walk
USU Local Contest. 1999
1889
820
1022
Genealogical Tree
Autumn School Contest 2000
10997
141
1033
Labyrinth
Ural Championship 1999
6565
236
1035
Cross-stitch
Ural Championship 1999
1122
1368
1040
Airline Company
USU Championship 2000
1526
1001
1045
Funny Game
USU Local Contest. March 2000
2907
521
1056
Centers of the Net
NEERC 2000 Central Subregional
2746
550
1065
Frontier
NEERC 2000
1009
1408
1069
Prufer Code
USU Personal Contest 2001
2689
517
1072
Routing
USU Personal Contest 2001
2767
502
1076
Trash
1941
711
1077
Travelling Tours
1257
396
1080
Map Coloring
Winter Mathematical Festival Varna 2001
7257
190
1085
Meeting
Spring School Contest 2001
2178
625
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1823
709
1099
Work Scheduling
1011
1151
1106
Two Teams
Tetrahedron Team Online Contest May 2001
6757
74
1109
Conference
Bulgarian Online Contest September 2001
1999
250
1119
Metro
Autumn School Contest 2001
7177
70
1124
Mosaic
USU Championship 2001
1674
298
1128
Partition into Groups
USU Championship 2001
1210
412
1129
Door Painting
USU Championship 2001
1228
406
1136
Parliament
NEERC 2001 Central Subregional
5025
100
1137
Bus Routes
NEERC 2001 Central Subregional
1551
322
1145
Rope in the Labyrinth
DSAP Vietnam Online Contest November 2001
1404
356
1156
Two Rounds
Ural Championship 2001. Round 2
1524
328
1160
Network
NEERC 2001 Northern Subregional
3476
146
1162
Currency Exchange
NEERC 2001 Northern Subregional
2551
197
1176
Hyperchannels
USU Personal Contest 2002
1499
334
1182
Team Them Up!
NEERC 2001
971
515
1198
Jobbery
1062
489
1199
Mouse
131
3406
1205
By the Underground or by Foot?
USU Local Contest. March 2002
2119
237
1208
Legendary Teams Contest
USU Local Contest. March 2002
2356
213
1210
Kind Spirits
Autumn School Contest 2002
3105
163
1218
Episode N-th: The Jedi Tournament
USU Championship 2002
1565
323
1227
Rally Championship
NEERC 2002 Central Subregional
1677
302
1237
Evacuation Plan
NEERC 2002
508
985
1242
Werewolf
USU Personal Contest 2003
2887
176
1250
Sea Burial
USU Local Contest. March 2003
691
729
1254
Die Hard
USU Local Contest. March 2003
783
645
1270
Unicube
USU Championship 2003
205
2395
1271
Sailing Directions
USU Championship 2003
101
4640
1272
Non-Yekaterinburg Subway
USU Championship 2003
3488
147
1277
Cops and Thieves
NEERC 2003 Central Subregional
642
790
1280
Topological Sorting
NEERC 2003 Central Subregional
3630
142
1281
River Basin
NEERC 2003 Central Subregional
363
1381
1291
Gear-wheels
Spring School Contest 2004
1334
385
1301
Cube in Labyrinth
Ural Championship 1998
688
741
1314
Chase in Subway
Ural Championship 2004. Round 1
869
589
1315
MDPAR and MIIAR
Ural Championship 2004. Round 1
269
1856
1320
Graph Decomposition
Ural Championship 2004. Round 2
1792
287
1323
Classmates
Ural Championship 2004. Round 2
616
827
1325
Dirt
Ural Championship 2004. Round 2
952
538
1329
Galactic History
Autumn School Contest 2004
1122
460
1337
Bureaucracy
Autumn School Contest 2004
325
1553
1338
Automobiles
USU Championship 2004
281
1794
1339
Babies
USU Championship 2004
596
861
1358
Cables
Spring School Contest 2005
952
543
1361
Spaceology vs. Chronistics
Ural Championship 2005. Round 2
257
1958
1367
Top Secret
Ural Championship 2005. Round 2
165
2988
1379
Cups Transportation
Ural Championship 2005. Round 1
847
612
1392
Dreaming of Stars
673
767
1399
Economical Director
37
10216
1400
Cellular Characters
Autumn School Contest 2005
942
551
1416
Confidential
USU Championship 2005
1314
395
1419
Maps of the Island Worlds
USU Championship 2005
418
1221
1421
Credit Operations
Timus Top Coders: First Challenge
929
545
1434
Buses in Vasyuki
USU Personal Contest 2006
561
894
1441
From the History of Gringotts Bank
Ural Championship 2006
433
1146
1447
Portkey Network
Ural Championship 2006
502
991
1449
Credit Operations 2
Timus Top Coders: Second Challenge
329
1490
1450
Russian Pipelines
Timus Top Coders: Second Challenge
3293
153
1479
Scheduled Checking
Petrozavodsk Summer 2006. Ural+Orel Contest
99
4493
1487
Chinese Football
USU Championship 2006
373
1275
1500
Pass Licenses
NEERC 2006 Eastern Subregional
750
640
1505
Oil Transfer
NEERC 2006 Eastern Subregional
158
2896
1527
Bad Roads
Petrozavodsk Winter 2007. D.Gozman Contest
397
1169
1533
Fat Hobbits
USU Personal Contest 2007
469
991
1544
Classmates 3
Ural Championship 2007
365
1253
1557
Network Attack
Petrozavodsk Summer 2007. NSU Contest
245
1787
1569
Networking the “Iset”
USU Championship 2007
484
920
1575
Yekaterinburg Subway 2
Autumn School Contest 2007
518
860
1580
Dean's Debts
Autumn School Contest 2007
496
897
1610
Cactuses
Ural Championship 2008
207
2022
1623
Fractal Labyrinth
Petrozavodsk Winter 2008. ITMO Contest
126
3138
1630
Talisman
USU Championship 2008
405
1017
1641
Duties
Autumn School Contest 2008
824
505
1643
Attack of the Dark Fortress
Autumn School Contest 2008
978
426
1651
Shortest Subchain
NEERC 2008 Eastern Subregional
1210
344
1652
Banking Crisis
NEERC 2008 Eastern Subregional
144
2729
1664
Pipeline Transportation
Petrozavodsk Winter 2008. USU Contest
201
1972
1676
Mortal Kombat
Petrozavodsk Summer 2008. USU Contest
229
1733
1691
Algorithm Complexity
Petrozavodsk Winter 2009. USU Contest
120
3146
1699
Turning Turtles
Petrozavodsk Winter 2009. USU Contest
368
1082
1709
Penguin-Avia
Ural Championship 2009
2642
154
1721
Two Sides of the Same Coin
NEERC 2009 Eastern Subregional
667
579
1742
Team building
Petrozavodsk Summer 2009. Ufa SATU Contest
1231
309
1770
The Party of Ural Champions
Ural Championship 2010
207
1738
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1894
190
1833
Hopes of Rowing
Ural Championship 2011
161
2032
1837
Isenbaev's Number
Ural Championship 2011
5839
59
1847
Zamkadye
Petrozavodsk Summer 2010. USU Contest
67
4375
1882
Old Nokia
Ural Regional School Programming Contest 2011
112
2740
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
717
459
1905
Travel in Time
Ural Championship 2012
263
1130
1912
Titan Ruins: Passing through Walls
NEERC 2012 Eastern Subregional
232
1272
1930
Ivan's Car
Ural Regional School Programming Contest 2012
1845
166
1934
Black Spot
Ural FU Championship 2012
856
354
1966
Cycling Roads
Ural FU Personal Contest 2013
415
684
1980
Road to Investor
Ural Championship 2013
440
639
1982
Electrification Plan
Ural FU Championship 2013
2131
132
2013
Neither shaken nor stirred
NEERC 2014 Eastern Subregional
262
950
2017
Best of a bad lot
NEERC 2014 Eastern Subregional
180
1360
2030
Awesome Backup System
Ural Regional School Programming Contest 2014
498
507
2034
Caravans
Ural Regional School Programming Contest 2014
898
283
2038
Minimum Vertex Cover
Petrozavodsk Summer 2014. Ural FU Dandelion Contest
95
2438
2055
Urban Geography
Ural Championship 2015
152
1512
2093
All Roads Lead to Snowdrift
Ural FU Personal Contest 2014
151
1349
2113
Survive the flood
University academic school olympiad in informatics 2019
364
417
2127
Determinant of a Graph
Petrozavodsk Summer 2018. umnik_team Contest
31
3755
2128
Rubina's Solitaire
Later is better than never
137
1017
2132
Graph Decomposition. Version 2
Later is better than never
89
1510
2140
BitMazeCraft
Ural School Programming Contest 2019
114
1166
2147
City Building
Ural School Programming Contest 2019
66
1903
2155
Quadrocopter
Ural School Programming Contest 2020
105
1030
2159
Essay
Ural School Programming Contest 2021
37
1469
2169
City Building 2
Ural School Programming Contest 2022
23
2090
2174
Dualism of Numbers
Ural School Programming Contest 2023
37
871
2180
Need More Tasks
Ural School Programming Contest 2023
13
1778
2187
Need More Gold
Ural School Programming Contest 2024
13
1777
2192
My Grandfather
ICPC Ural Regional Contest Qualifier 2022
21
1321
2195
Binary Trees
ICPC Ural Regional Contest Qualifier 2023
10
2047
2198
Deep Understanding
ICPC Ural Regional Contest Qualifier 2024
19
1408
Solved problems:
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