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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
2664
581
1008
Image Encoding
USTU PhysTech Cup 2000
4255
364
1016
Cube on the Walk
USU Local Contest. 1999
1884
817
1022
Genealogical Tree
Autumn School Contest 2000
10952
141
1033
Labyrinth
Ural Championship 1999
6545
235
1035
Cross-stitch
Ural Championship 1999
1120
1360
1040
Airline Company
USU Championship 2000
1514
1001
1045
Funny Game
USU Local Contest. March 2000
2899
519
1056
Centers of the Net
NEERC 2000 Central Subregional
2734
548
1065
Frontier
NEERC 2000
1005
1403
1069
Prufer Code
USU Personal Contest 2001
2680
515
1072
Routing
USU Personal Contest 2001
2759
500
1076
Trash
1934
708
1077
Travelling Tours
1248
396
1080
Map Coloring
Winter Mathematical Festival Varna 2001
7211
190
1085
Meeting
Spring School Contest 2001
2171
623
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1818
706
1099
Work Scheduling
1008
1146
1106
Two Teams
Tetrahedron Team Online Contest May 2001
6699
74
1109
Conference
Bulgarian Online Contest September 2001
1985
250
1119
Metro
Autumn School Contest 2001
7148
70
1124
Mosaic
USU Championship 2001
1668
297
1128
Partition into Groups
USU Championship 2001
1199
413
1129
Door Painting
USU Championship 2001
1184
418
1136
Parliament
NEERC 2001 Central Subregional
5006
100
1137
Bus Routes
NEERC 2001 Central Subregional
1542
322
1145
Rope in the Labyrinth
DSAP Vietnam Online Contest November 2001
1394
356
1156
Two Rounds
Ural Championship 2001. Round 2
1517
327
1160
Network
NEERC 2001 Northern Subregional
3438
147
1162
Currency Exchange
NEERC 2001 Northern Subregional
2508
198
1176
Hyperchannels
USU Personal Contest 2002
1488
334
1182
Team Them Up!
NEERC 2001
969
512
1198
Jobbery
1055
489
1199
Mouse
130
3404
1205
By the Underground or by Foot?
USU Local Contest. March 2002
2104
237
1208
Legendary Teams Contest
USU Local Contest. March 2002
2344
213
1210
Kind Spirits
Autumn School Contest 2002
3099
162
1218
Episode N-th: The Jedi Tournament
USU Championship 2002
1556
323
1227
Rally Championship
NEERC 2002 Central Subregional
1665
302
1237
Evacuation Plan
NEERC 2002
504
986
1242
Werewolf
USU Personal Contest 2003
2863
177
1250
Sea Burial
USU Local Contest. March 2003
686
730
1254
Die Hard
USU Local Contest. March 2003
782
641
1270
Unicube
USU Championship 2003
203
2402
1271
Sailing Directions
USU Championship 2003
101
4608
1272
Non-Yekaterinburg Subway
USU Championship 2003
3431
149
1277
Cops and Thieves
NEERC 2003 Central Subregional
636
792
1280
Topological Sorting
NEERC 2003 Central Subregional
3613
141
1281
River Basin
NEERC 2003 Central Subregional
362
1376
1291
Gear-wheels
Spring School Contest 2004
1327
384
1301
Cube in Labyrinth
Ural Championship 1998
681
744
1314
Chase in Subway
Ural Championship 2004. Round 1
864
588
1315
MDPAR and MIIAR
Ural Championship 2004. Round 1
267
1856
1320
Graph Decomposition
Ural Championship 2004. Round 2
1780
287
1323
Classmates
Ural Championship 2004. Round 2
612
827
1325
Dirt
Ural Championship 2004. Round 2
947
537
1329
Galactic History
Autumn School Contest 2004
1112
461
1337
Bureaucracy
Autumn School Contest 2004
321
1562
1338
Automobiles
USU Championship 2004
279
1795
1339
Babies
USU Championship 2004
594
859
1358
Cables
Spring School Contest 2005
948
542
1361
Spaceology vs. Chronistics
Ural Championship 2005. Round 2
254
1967
1367
Top Secret
Ural Championship 2005. Round 2
162
3020
1379
Cups Transportation
Ural Championship 2005. Round 1
842
611
1392
Dreaming of Stars
670
766
1399
Economical Director
35
10587
1400
Cellular Characters
Autumn School Contest 2005
938
549
1416
Confidential
USU Championship 2005
1304
395
1419
Maps of the Island Worlds
USU Championship 2005
417
1216
1421
Credit Operations
Timus Top Coders: First Challenge
923
545
1434
Buses in Vasyuki
USU Personal Contest 2006
509
977
1441
From the History of Gringotts Bank
Ural Championship 2006
431
1143
1447
Portkey Network
Ural Championship 2006
497
994
1449
Credit Operations 2
Timus Top Coders: Second Challenge
327
1488
1450
Russian Pipelines
Timus Top Coders: Second Challenge
3258
153
1479
Scheduled Checking
Petrozavodsk Summer 2006. Ural+Orel Contest
98
4501
1487
Chinese Football
USU Championship 2006
372
1269
1500
Pass Licenses
NEERC 2006 Eastern Subregional
748
637
1505
Oil Transfer
NEERC 2006 Eastern Subregional
156
2908
1527
Bad Roads
Petrozavodsk Winter 2007. D.Gozman Contest
394
1168
1533
Fat Hobbits
USU Personal Contest 2007
463
995
1544
Classmates 3
Ural Championship 2007
362
1253
1557
Network Attack
Petrozavodsk Summer 2007. NSU Contest
241
1800
1569
Networking the “Iset”
USU Championship 2007
470
939
1575
Yekaterinburg Subway 2
Autumn School Contest 2007
514
859
1580
Dean's Debts
Autumn School Contest 2007
494
893
1610
Cactuses
Ural Championship 2008
206
2013
1623
Fractal Labyrinth
Petrozavodsk Winter 2008. ITMO Contest
125
3130
1630
Talisman
USU Championship 2008
402
1014
1641
Duties
Autumn School Contest 2008
822
501
1643
Attack of the Dark Fortress
Autumn School Contest 2008
973
424
1651
Shortest Subchain
NEERC 2008 Eastern Subregional
1190
347
1652
Banking Crisis
NEERC 2008 Eastern Subregional
143
2719
1664
Pipeline Transportation
Petrozavodsk Winter 2008. USU Contest
199
1971
1676
Mortal Kombat
Petrozavodsk Summer 2008. USU Contest
228
1723
1691
Algorithm Complexity
Petrozavodsk Winter 2009. USU Contest
118
3162
1699
Turning Turtles
Petrozavodsk Winter 2009. USU Contest
363
1085
1709
Penguin-Avia
Ural Championship 2009
2626
153
1721
Two Sides of the Same Coin
NEERC 2009 Eastern Subregional
661
577
1742
Team building
Petrozavodsk Summer 2009. Ufa SATU Contest
1222
308
1770
The Party of Ural Champions
Ural Championship 2010
206
1725
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1868
190
1833
Hopes of Rowing
Ural Championship 2011
160
2016
1837
Isenbaev's Number
Ural Championship 2011
5769
59
1847
Zamkadye
Petrozavodsk Summer 2010. USU Contest
66
4369
1882
Old Nokia
Ural Regional School Programming Contest 2011
110
2746
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
708
458
1905
Travel in Time
Ural Championship 2012
258
1132
1912
Titan Ruins: Passing through Walls
NEERC 2012 Eastern Subregional
230
1262
1930
Ivan's Car
Ural Regional School Programming Contest 2012
1812
166
1934
Black Spot
Ural FU Championship 2012
850
350
1966
Cycling Roads
Ural FU Personal Contest 2013
412
677
1980
Road to Investor
Ural Championship 2013
437
632
1982
Electrification Plan
Ural FU Championship 2013
2115
130
2013
Neither shaken nor stirred
NEERC 2014 Eastern Subregional
261
934
2017
Best of a bad lot
NEERC 2014 Eastern Subregional
179
1339
2030
Awesome Backup System
Ural Regional School Programming Contest 2014
494
500
2034
Caravans
Ural Regional School Programming Contest 2014
864
288
2038
Minimum Vertex Cover
Petrozavodsk Summer 2014. Ural FU Dandelion Contest
94
2410
2055
Urban Geography
Ural Championship 2015
150
1497
2093
All Roads Lead to Snowdrift
Ural FU Personal Contest 2014
148
1339
2113
Survive the flood
University academic school olympiad in informatics 2019
352
414
2127
Determinant of a Graph
Petrozavodsk Summer 2018. umnik_team Contest
28
3891
2128
Rubina's Solitaire
Later is better than never
137
975
2132
Graph Decomposition. Version 2
Later is better than never
86
1493
2140
BitMazeCraft
Ural School Programming Contest 2019
111
1144
2147
City Building
Ural School Programming Contest 2019
66
1822
2155
Quadrocopter
Ural School Programming Contest 2020
101
1010
2159
Essay
Ural School Programming Contest 2021
35
1386
2169
City Building 2
Ural School Programming Contest 2022
19
2147
2174
Dualism of Numbers
Ural School Programming Contest 2023
23
1031
2180
Need More Tasks
Ural School Programming Contest 2023
10
1699
2187
Need More Gold
Ural School Programming Contest 2024
5
2265
2192
My Grandfather
ICPC Ural Regional Contest Qualifier 2022
15
1361
2195
Binary Trees
ICPC Ural Regional Contest Qualifier 2023
9
1791
2198
Deep Understanding
ICPC Ural Regional Contest Qualifier 2024
12
1543
Solved problems:
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