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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
2706
580
1008
Image Encoding
USTU PhysTech Cup 2000
4277
367
1016
Cube on the Walk
USU Local Contest. 1999
1894
823
1022
Genealogical Tree
Autumn School Contest 2000
11042
142
1033
Labyrinth
Ural Championship 1999
6589
237
1035
Cross-stitch
Ural Championship 1999
1127
1370
1040
Airline Company
USU Championship 2000
1535
1001
1045
Funny Game
USU Local Contest. March 2000
2916
523
1056
Centers of the Net
NEERC 2000 Central Subregional
2755
552
1065
Frontier
NEERC 2000
1013
1411
1069
Prufer Code
USU Personal Contest 2001
2704
517
1072
Routing
USU Personal Contest 2001
2787
502
1076
Trash
1950
712
1077
Travelling Tours
1268
395
1080
Map Coloring
Winter Mathematical Festival Varna 2001
7291
190
1085
Meeting
Spring School Contest 2001
2190
625
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1830
710
1099
Work Scheduling
1020
1148
1106
Two Teams
Tetrahedron Team Online Contest May 2001
6797
74
1109
Conference
Bulgarian Online Contest September 2001
2009
250
1119
Metro
Autumn School Contest 2001
7216
70
1124
Mosaic
USU Championship 2001
1682
299
1128
Partition into Groups
USU Championship 2001
1216
412
1129
Door Painting
USU Championship 2001
1234
406
1136
Parliament
NEERC 2001 Central Subregional
5041
100
1137
Bus Routes
NEERC 2001 Central Subregional
1560
322
1145
Rope in the Labyrinth
DSAP Vietnam Online Contest November 2001
1423
353
1156
Two Rounds
Ural Championship 2001. Round 2
1539
327
1160
Network
NEERC 2001 Northern Subregional
3489
146
1162
Currency Exchange
NEERC 2001 Northern Subregional
2558
197
1176
Hyperchannels
USU Personal Contest 2002
1507
335
1182
Team Them Up!
NEERC 2001
981
512
1198
Jobbery
1070
488
1199
Mouse
113
3930
1205
By the Underground or by Foot?
USU Local Contest. March 2002
2150
235
1208
Legendary Teams Contest
USU Local Contest. March 2002
2365
214
1210
Kind Spirits
Autumn School Contest 2002
3001
170
1218
Episode N-th: The Jedi Tournament
USU Championship 2002
1577
323
1227
Rally Championship
NEERC 2002 Central Subregional
1689
301
1237
Evacuation Plan
NEERC 2002
508
991
1242
Werewolf
USU Personal Contest 2003
2900
177
1250
Sea Burial
USU Local Contest. March 2003
698
726
1254
Die Hard
USU Local Contest. March 2003
787
645
1270
Unicube
USU Championship 2003
213
2323
1271
Sailing Directions
USU Championship 2003
102
4624
1272
Non-Yekaterinburg Subway
USU Championship 2003
3502
147
1277
Cops and Thieves
NEERC 2003 Central Subregional
586
869
1280
Topological Sorting
NEERC 2003 Central Subregional
3653
141
1281
River Basin
NEERC 2003 Central Subregional
274
1824
1291
Gear-wheels
Spring School Contest 2004
1347
383
1301
Cube in Labyrinth
Ural Championship 1998
688
745
1314
Chase in Subway
Ural Championship 2004. Round 1
876
588
1315
MDPAR and MIIAR
Ural Championship 2004. Round 1
272
1846
1320
Graph Decomposition
Ural Championship 2004. Round 2
1804
287
1323
Classmates
Ural Championship 2004. Round 2
617
830
1325
Dirt
Ural Championship 2004. Round 2
960
537
1329
Galactic History
Autumn School Contest 2004
1132
458
1337
Bureaucracy
Autumn School Contest 2004
331
1534
1338
Automobiles
USU Championship 2004
289
1756
1339
Babies
USU Championship 2004
601
859
1358
Cables
Spring School Contest 2005
964
539
1361
Spaceology vs. Chronistics
Ural Championship 2005. Round 2
261
1940
1367
Top Secret
Ural Championship 2005. Round 2
165
3004
1379
Cups Transportation
Ural Championship 2005. Round 1
857
608
1392
Dreaming of Stars
675
769
1399
Economical Director
38
10068
1400
Cellular Characters
Autumn School Contest 2005
950
549
1416
Confidential
USU Championship 2005
1324
394
1419
Maps of the Island Worlds
USU Championship 2005
423
1214
1421
Credit Operations
Timus Top Coders: First Challenge
938
543
1434
Buses in Vasyuki
USU Personal Contest 2006
568
888
1441
From the History of Gringotts Bank
Ural Championship 2006
437
1142
1447
Portkey Network
Ural Championship 2006
509
984
1449
Credit Operations 2
Timus Top Coders: Second Challenge
333
1481
1450
Russian Pipelines
Timus Top Coders: Second Challenge
3318
153
1479
Scheduled Checking
Petrozavodsk Summer 2006. Ural+Orel Contest
102
4400
1487
Chinese Football
USU Championship 2006
381
1257
1500
Pass Licenses
NEERC 2006 Eastern Subregional
753
642
1505
Oil Transfer
NEERC 2006 Eastern Subregional
159
2897
1527
Bad Roads
Petrozavodsk Winter 2007. D.Gozman Contest
404
1157
1533
Fat Hobbits
USU Personal Contest 2007
474
987
1544
Classmates 3
Ural Championship 2007
367
1255
1557
Network Attack
Petrozavodsk Summer 2007. NSU Contest
249
1772
1569
Networking the “Iset”
USU Championship 2007
491
914
1575
Yekaterinburg Subway 2
Autumn School Contest 2007
520
863
1580
Dean's Debts
Autumn School Contest 2007
504
889
1610
Cactuses
Ural Championship 2008
209
2019
1623
Fractal Labyrinth
Petrozavodsk Winter 2008. ITMO Contest
128
3117
1630
Talisman
USU Championship 2008
412
1008
1641
Duties
Autumn School Contest 2008
827
507
1643
Attack of the Dark Fortress
Autumn School Contest 2008
986
426
1651
Shortest Subchain
NEERC 2008 Eastern Subregional
1217
345
1652
Banking Crisis
NEERC 2008 Eastern Subregional
147
2698
1664
Pipeline Transportation
Petrozavodsk Winter 2008. USU Contest
204
1960
1676
Mortal Kombat
Petrozavodsk Summer 2008. USU Contest
230
1741
1691
Algorithm Complexity
Petrozavodsk Winter 2009. USU Contest
125
3056
1699
Turning Turtles
Petrozavodsk Winter 2009. USU Contest
372
1080
1709
Penguin-Avia
Ural Championship 2009
2649
154
1721
Two Sides of the Same Coin
NEERC 2009 Eastern Subregional
671
581
1742
Team building
Petrozavodsk Summer 2009. Ufa SATU Contest
1239
310
1770
The Party of Ural Champions
Ural Championship 2010
209
1739
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1902
191
1833
Hopes of Rowing
Ural Championship 2011
162
2042
1837
Isenbaev's Number
Ural Championship 2011
5887
60
1847
Zamkadye
Petrozavodsk Summer 2010. USU Contest
69
4314
1882
Old Nokia
Ural Regional School Programming Contest 2011
114
2728
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
727
458
1905
Travel in Time
Ural Championship 2012
264
1141
1912
Titan Ruins: Passing through Walls
NEERC 2012 Eastern Subregional
234
1279
1930
Ivan's Car
Ural Regional School Programming Contest 2012
1873
165
1934
Black Spot
Ural FU Championship 2012
863
356
1966
Cycling Roads
Ural FU Personal Contest 2013
422
683
1980
Road to Investor
Ural Championship 2013
446
640
1982
Electrification Plan
Ural FU Championship 2013
2144
133
2013
Neither shaken nor stirred
NEERC 2014 Eastern Subregional
265
955
2017
Best of a bad lot
NEERC 2014 Eastern Subregional
183
1361
2030
Awesome Backup System
Ural Regional School Programming Contest 2014
501
512
2034
Caravans
Ural Regional School Programming Contest 2014
908
285
2038
Minimum Vertex Cover
Petrozavodsk Summer 2014. Ural FU Dandelion Contest
96
2457
2055
Urban Geography
Ural Championship 2015
156
1502
2093
All Roads Lead to Snowdrift
Ural FU Personal Contest 2014
151
1378
2113
Survive the flood
University academic school olympiad in informatics 2019
369
425
2127
Determinant of a Graph
Petrozavodsk Summer 2018. umnik_team Contest
33
3698
2128
Rubina's Solitaire
Later is better than never
145
997
2132
Graph Decomposition. Version 2
Later is better than never
92
1515
2140
BitMazeCraft
Ural School Programming Contest 2019
118
1170
2147
City Building
Ural School Programming Contest 2019
68
1920
2155
Quadrocopter
Ural School Programming Contest 2020
113
1005
2159
Essay
Ural School Programming Contest 2021
40
1492
2169
City Building 2
Ural School Programming Contest 2022
28
1961
2174
Dualism of Numbers
Ural School Programming Contest 2023
40
933
2180
Need More Tasks
Ural School Programming Contest 2023
18
1665
2187
Need More Gold
Ural School Programming Contest 2024
16
1793
2192
My Grandfather
ICPC Ural Regional Contest Qualifier 2022
30
1167
2195
Binary Trees
ICPC Ural Regional Contest Qualifier 2023
12
2121
2198
Deep Understanding
ICPC Ural Regional Contest Qualifier 2024
24
1370
Solved problems:
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