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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
2700
581
1008
Image Encoding
USTU PhysTech Cup 2000
4275
367
1016
Cube on the Walk
USU Local Contest. 1999
1891
824
1022
Genealogical Tree
Autumn School Contest 2000
11033
142
1033
Labyrinth
Ural Championship 1999
6584
237
1035
Cross-stitch
Ural Championship 1999
1126
1370
1040
Airline Company
USU Championship 2000
1530
1003
1045
Funny Game
USU Local Contest. March 2000
2912
523
1056
Centers of the Net
NEERC 2000 Central Subregional
2749
552
1065
Frontier
NEERC 2000
1011
1412
1069
Prufer Code
USU Personal Contest 2001
2695
518
1072
Routing
USU Personal Contest 2001
2777
503
1076
Trash
1945
713
1077
Travelling Tours
1268
395
1080
Map Coloring
Winter Mathematical Festival Varna 2001
7278
190
1085
Meeting
Spring School Contest 2001
2182
627
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1825
712
1099
Work Scheduling
1014
1153
1106
Two Teams
Tetrahedron Team Online Contest May 2001
6784
74
1109
Conference
Bulgarian Online Contest September 2001
2002
251
1119
Metro
Autumn School Contest 2001
7210
70
1124
Mosaic
USU Championship 2001
1676
299
1128
Partition into Groups
USU Championship 2001
1215
412
1129
Door Painting
USU Championship 2001
1234
406
1136
Parliament
NEERC 2001 Central Subregional
5036
100
1137
Bus Routes
NEERC 2001 Central Subregional
1558
322
1145
Rope in the Labyrinth
DSAP Vietnam Online Contest November 2001
1420
353
1156
Two Rounds
Ural Championship 2001. Round 2
1532
328
1160
Network
NEERC 2001 Northern Subregional
3485
146
1162
Currency Exchange
NEERC 2001 Northern Subregional
2554
197
1176
Hyperchannels
USU Personal Contest 2002
1506
334
1182
Team Them Up!
NEERC 2001
973
516
1198
Jobbery
1068
488
1199
Mouse
113
3925
1205
By the Underground or by Foot?
USU Local Contest. March 2002
2141
236
1208
Legendary Teams Contest
USU Local Contest. March 2002
2361
214
1210
Kind Spirits
Autumn School Contest 2002
2997
170
1218
Episode N-th: The Jedi Tournament
USU Championship 2002
1568
324
1227
Rally Championship
NEERC 2002 Central Subregional
1684
302
1237
Evacuation Plan
NEERC 2002
508
990
1242
Werewolf
USU Personal Contest 2003
2893
177
1250
Sea Burial
USU Local Contest. March 2003
692
732
1254
Die Hard
USU Local Contest. March 2003
787
645
1270
Unicube
USU Championship 2003
205
2406
1271
Sailing Directions
USU Championship 2003
101
4661
1272
Non-Yekaterinburg Subway
USU Championship 2003
3491
148
1277
Cops and Thieves
NEERC 2003 Central Subregional
585
870
1280
Topological Sorting
NEERC 2003 Central Subregional
3644
142
1281
River Basin
NEERC 2003 Central Subregional
273
1829
1291
Gear-wheels
Spring School Contest 2004
1340
385
1301
Cube in Labyrinth
Ural Championship 1998
688
745
1314
Chase in Subway
Ural Championship 2004. Round 1
871
590
1315
MDPAR and MIIAR
Ural Championship 2004. Round 1
271
1851
1320
Graph Decomposition
Ural Championship 2004. Round 2
1795
288
1323
Classmates
Ural Championship 2004. Round 2
617
829
1325
Dirt
Ural Championship 2004. Round 2
954
539
1329
Galactic History
Autumn School Contest 2004
1126
460
1337
Bureaucracy
Autumn School Contest 2004
328
1546
1338
Automobiles
USU Championship 2004
288
1760
1339
Babies
USU Championship 2004
600
860
1358
Cables
Spring School Contest 2005
957
543
1361
Spaceology vs. Chronistics
Ural Championship 2005. Round 2
257
1967
1367
Top Secret
Ural Championship 2005. Round 2
165
3001
1379
Cups Transportation
Ural Championship 2005. Round 1
853
610
1392
Dreaming of Stars
674
770
1399
Economical Director
38
10055
1400
Cellular Characters
Autumn School Contest 2005
950
548
1416
Confidential
USU Championship 2005
1319
395
1419
Maps of the Island Worlds
USU Championship 2005
418
1227
1421
Credit Operations
Timus Top Coders: First Challenge
938
543
1434
Buses in Vasyuki
USU Personal Contest 2006
563
895
1441
From the History of Gringotts Bank
Ural Championship 2006
436
1144
1447
Portkey Network
Ural Championship 2006
505
990
1449
Credit Operations 2
Timus Top Coders: Second Challenge
332
1483
1450
Russian Pipelines
Timus Top Coders: Second Challenge
3307
153
1479
Scheduled Checking
Petrozavodsk Summer 2006. Ural+Orel Contest
99
4515
1487
Chinese Football
USU Championship 2006
376
1272
1500
Pass Licenses
NEERC 2006 Eastern Subregional
753
641
1505
Oil Transfer
NEERC 2006 Eastern Subregional
159
2893
1527
Bad Roads
Petrozavodsk Winter 2007. D.Gozman Contest
397
1175
1533
Fat Hobbits
USU Personal Contest 2007
469
996
1544
Classmates 3
Ural Championship 2007
366
1257
1557
Network Attack
Petrozavodsk Summer 2007. NSU Contest
246
1791
1569
Networking the “Iset”
USU Championship 2007
490
914
1575
Yekaterinburg Subway 2
Autumn School Contest 2007
520
861
1580
Dean's Debts
Autumn School Contest 2007
497
900
1610
Cactuses
Ural Championship 2008
208
2026
1623
Fractal Labyrinth
Petrozavodsk Winter 2008. ITMO Contest
128
3112
1630
Talisman
USU Championship 2008
406
1021
1641
Duties
Autumn School Contest 2008
827
506
1643
Attack of the Dark Fortress
Autumn School Contest 2008
983
427
1651
Shortest Subchain
NEERC 2008 Eastern Subregional
1215
345
1652
Banking Crisis
NEERC 2008 Eastern Subregional
146
2711
1664
Pipeline Transportation
Petrozavodsk Winter 2008. USU Contest
203
1966
1676
Mortal Kombat
Petrozavodsk Summer 2008. USU Contest
230
1738
1691
Algorithm Complexity
Petrozavodsk Winter 2009. USU Contest
122
3120
1699
Turning Turtles
Petrozavodsk Winter 2009. USU Contest
369
1087
1709
Penguin-Avia
Ural Championship 2009
2646
154
1721
Two Sides of the Same Coin
NEERC 2009 Eastern Subregional
670
580
1742
Team building
Petrozavodsk Summer 2009. Ufa SATU Contest
1234
310
1770
The Party of Ural Champions
Ural Championship 2010
209
1735
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1899
191
1833
Hopes of Rowing
Ural Championship 2011
162
2038
1837
Isenbaev's Number
Ural Championship 2011
5877
60
1847
Zamkadye
Petrozavodsk Summer 2010. USU Contest
68
4359
1882
Old Nokia
Ural Regional School Programming Contest 2011
114
2722
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
723
460
1905
Travel in Time
Ural Championship 2012
264
1138
1912
Titan Ruins: Passing through Walls
NEERC 2012 Eastern Subregional
233
1281
1930
Ivan's Car
Ural Regional School Programming Contest 2012
1863
166
1934
Black Spot
Ural FU Championship 2012
860
356
1966
Cycling Roads
Ural FU Personal Contest 2013
417
689
1980
Road to Investor
Ural Championship 2013
442
644
1982
Electrification Plan
Ural FU Championship 2013
2139
133
2013
Neither shaken nor stirred
NEERC 2014 Eastern Subregional
262
963
2017
Best of a bad lot
NEERC 2014 Eastern Subregional
181
1371
2030
Awesome Backup System
Ural Regional School Programming Contest 2014
500
512
2034
Caravans
Ural Regional School Programming Contest 2014
903
286
2038
Minimum Vertex Cover
Petrozavodsk Summer 2014. Ural FU Dandelion Contest
96
2449
2055
Urban Geography
Ural Championship 2015
154
1515
2093
All Roads Lead to Snowdrift
Ural FU Personal Contest 2014
151
1372
2113
Survive the flood
University academic school olympiad in informatics 2019
366
426
2127
Determinant of a Graph
Petrozavodsk Summer 2018. umnik_team Contest
32
3762
2128
Rubina's Solitaire
Later is better than never
142
1010
2132
Graph Decomposition. Version 2
Later is better than never
89
1551
2140
BitMazeCraft
Ural School Programming Contest 2019
114
1199
2147
City Building
Ural School Programming Contest 2019
67
1931
2155
Quadrocopter
Ural School Programming Contest 2020
105
1066
2159
Essay
Ural School Programming Contest 2021
37
1564
2169
City Building 2
Ural School Programming Contest 2022
24
2160
2174
Dualism of Numbers
Ural School Programming Contest 2023
40
910
2180
Need More Tasks
Ural School Programming Contest 2023
17
1685
2187
Need More Gold
Ural School Programming Contest 2024
14
1895
2192
My Grandfather
ICPC Ural Regional Contest Qualifier 2022
22
1423
2195
Binary Trees
ICPC Ural Regional Contest Qualifier 2023
11
2168
2198
Deep Understanding
ICPC Ural Regional Contest Qualifier 2024
23
1377
Solved problems:
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