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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
2670
582
1008
Image Encoding
USTU PhysTech Cup 2000
4259
364
1016
Cube on the Walk
USU Local Contest. 1999
1885
818
1022
Genealogical Tree
Autumn School Contest 2000
10963
141
1033
Labyrinth
Ural Championship 1999
6555
235
1035
Cross-stitch
Ural Championship 1999
1121
1363
1040
Airline Company
USU Championship 2000
1519
1001
1045
Funny Game
USU Local Contest. March 2000
2901
520
1056
Centers of the Net
NEERC 2000 Central Subregional
2738
549
1065
Frontier
NEERC 2000
1005
1407
1069
Prufer Code
USU Personal Contest 2001
2685
515
1072
Routing
USU Personal Contest 2001
2763
501
1076
Trash
1939
708
1077
Travelling Tours
1252
396
1080
Map Coloring
Winter Mathematical Festival Varna 2001
7230
190
1085
Meeting
Spring School Contest 2001
2174
623
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1821
706
1099
Work Scheduling
1009
1148
1106
Two Teams
Tetrahedron Team Online Contest May 2001
6743
74
1109
Conference
Bulgarian Online Contest September 2001
1992
250
1119
Metro
Autumn School Contest 2001
7158
70
1124
Mosaic
USU Championship 2001
1668
298
1128
Partition into Groups
USU Championship 2001
1202
413
1129
Door Painting
USU Championship 2001
1220
407
1136
Parliament
NEERC 2001 Central Subregional
5011
100
1137
Bus Routes
NEERC 2001 Central Subregional
1545
322
1145
Rope in the Labyrinth
DSAP Vietnam Online Contest November 2001
1400
355
1156
Two Rounds
Ural Championship 2001. Round 2
1519
328
1160
Network
NEERC 2001 Northern Subregional
3455
146
1162
Currency Exchange
NEERC 2001 Northern Subregional
2533
197
1176
Hyperchannels
USU Personal Contest 2002
1491
335
1182
Team Them Up!
NEERC 2001
970
513
1198
Jobbery
1057
489
1199
Mouse
130
3414
1205
By the Underground or by Foot?
USU Local Contest. March 2002
2112
237
1208
Legendary Teams Contest
USU Local Contest. March 2002
2350
213
1210
Kind Spirits
Autumn School Contest 2002
3103
163
1218
Episode N-th: The Jedi Tournament
USU Championship 2002
1557
323
1227
Rally Championship
NEERC 2002 Central Subregional
1671
302
1237
Evacuation Plan
NEERC 2002
505
986
1242
Werewolf
USU Personal Contest 2003
2873
177
1250
Sea Burial
USU Local Contest. March 2003
687
730
1254
Die Hard
USU Local Contest. March 2003
783
642
1270
Unicube
USU Championship 2003
204
2396
1271
Sailing Directions
USU Championship 2003
101
4620
1272
Non-Yekaterinburg Subway
USU Championship 2003
3479
147
1277
Cops and Thieves
NEERC 2003 Central Subregional
638
792
1280
Topological Sorting
NEERC 2003 Central Subregional
3620
141
1281
River Basin
NEERC 2003 Central Subregional
362
1379
1291
Gear-wheels
Spring School Contest 2004
1329
385
1301
Cube in Labyrinth
Ural Championship 1998
681
746
1314
Chase in Subway
Ural Championship 2004. Round 1
867
588
1315
MDPAR and MIIAR
Ural Championship 2004. Round 1
268
1854
1320
Graph Decomposition
Ural Championship 2004. Round 2
1788
287
1323
Classmates
Ural Championship 2004. Round 2
613
827
1325
Dirt
Ural Championship 2004. Round 2
950
537
1329
Galactic History
Autumn School Contest 2004
1117
460
1337
Bureaucracy
Autumn School Contest 2004
323
1556
1338
Automobiles
USU Championship 2004
280
1793
1339
Babies
USU Championship 2004
594
861
1358
Cables
Spring School Contest 2005
949
542
1361
Spaceology vs. Chronistics
Ural Championship 2005. Round 2
255
1965
1367
Top Secret
Ural Championship 2005. Round 2
162
3027
1379
Cups Transportation
Ural Championship 2005. Round 1
845
610
1392
Dreaming of Stars
670
768
1399
Economical Director
36
10387
1400
Cellular Characters
Autumn School Contest 2005
940
549
1416
Confidential
USU Championship 2005
1309
395
1419
Maps of the Island Worlds
USU Championship 2005
417
1219
1421
Credit Operations
Timus Top Coders: First Challenge
926
545
1434
Buses in Vasyuki
USU Personal Contest 2006
557
897
1441
From the History of Gringotts Bank
Ural Championship 2006
431
1146
1447
Portkey Network
Ural Championship 2006
498
995
1449
Credit Operations 2
Timus Top Coders: Second Challenge
328
1487
1450
Russian Pipelines
Timus Top Coders: Second Challenge
3273
153
1479
Scheduled Checking
Petrozavodsk Summer 2006. Ural+Orel Contest
98
4513
1487
Chinese Football
USU Championship 2006
372
1273
1500
Pass Licenses
NEERC 2006 Eastern Subregional
748
639
1505
Oil Transfer
NEERC 2006 Eastern Subregional
156
2916
1527
Bad Roads
Petrozavodsk Winter 2007. D.Gozman Contest
394
1172
1533
Fat Hobbits
USU Personal Contest 2007
466
992
1544
Classmates 3
Ural Championship 2007
362
1257
1557
Network Attack
Petrozavodsk Summer 2007. NSU Contest
244
1785
1569
Networking the “Iset”
USU Championship 2007
473
936
1575
Yekaterinburg Subway 2
Autumn School Contest 2007
514
861
1580
Dean's Debts
Autumn School Contest 2007
494
896
1610
Cactuses
Ural Championship 2008
206
2020
1623
Fractal Labyrinth
Petrozavodsk Winter 2008. ITMO Contest
125
3141
1630
Talisman
USU Championship 2008
402
1018
1641
Duties
Autumn School Contest 2008
823
502
1643
Attack of the Dark Fortress
Autumn School Contest 2008
976
424
1651
Shortest Subchain
NEERC 2008 Eastern Subregional
1207
343
1652
Banking Crisis
NEERC 2008 Eastern Subregional
143
2729
1664
Pipeline Transportation
Petrozavodsk Winter 2008. USU Contest
199
1978
1676
Mortal Kombat
Petrozavodsk Summer 2008. USU Contest
228
1729
1691
Algorithm Complexity
Petrozavodsk Winter 2009. USU Contest
118
3174
1699
Turning Turtles
Petrozavodsk Winter 2009. USU Contest
363
1089
1709
Penguin-Avia
Ural Championship 2009
2633
153
1721
Two Sides of the Same Coin
NEERC 2009 Eastern Subregional
662
579
1742
Team building
Petrozavodsk Summer 2009. Ufa SATU Contest
1227
308
1770
The Party of Ural Champions
Ural Championship 2010
206
1733
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1889
189
1833
Hopes of Rowing
Ural Championship 2011
161
2014
1837
Isenbaev's Number
Ural Championship 2011
5811
59
1847
Zamkadye
Petrozavodsk Summer 2010. USU Contest
66
4392
1882
Old Nokia
Ural Regional School Programming Contest 2011
110
2761
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
711
459
1905
Travel in Time
Ural Championship 2012
260
1131
1912
Titan Ruins: Passing through Walls
NEERC 2012 Eastern Subregional
230
1270
1930
Ivan's Car
Ural Regional School Programming Contest 2012
1828
166
1934
Black Spot
Ural FU Championship 2012
852
352
1966
Cycling Roads
Ural FU Personal Contest 2013
413
680
1980
Road to Investor
Ural Championship 2013
438
635
1982
Electrification Plan
Ural FU Championship 2013
2122
131
2013
Neither shaken nor stirred
NEERC 2014 Eastern Subregional
261
941
2017
Best of a bad lot
NEERC 2014 Eastern Subregional
180
1342
2030
Awesome Backup System
Ural Regional School Programming Contest 2014
495
503
2034
Caravans
Ural Regional School Programming Contest 2014
883
284
2038
Minimum Vertex Cover
Petrozavodsk Summer 2014. Ural FU Dandelion Contest
94
2429
2055
Urban Geography
Ural Championship 2015
151
1500
2093
All Roads Lead to Snowdrift
Ural FU Personal Contest 2014
148
1352
2113
Survive the flood
University academic school olympiad in informatics 2019
356
416
2127
Determinant of a Graph
Petrozavodsk Summer 2018. umnik_team Contest
28
3950
2128
Rubina's Solitaire
Later is better than never
137
991
2132
Graph Decomposition. Version 2
Later is better than never
88
1486
2140
BitMazeCraft
Ural School Programming Contest 2019
111
1163
2147
City Building
Ural School Programming Contest 2019
66
1852
2155
Quadrocopter
Ural School Programming Contest 2020
103
1012
2159
Essay
Ural School Programming Contest 2021
35
1440
2169
City Building 2
Ural School Programming Contest 2022
20
2158
2174
Dualism of Numbers
Ural School Programming Contest 2023
25
1044
2180
Need More Tasks
Ural School Programming Contest 2023
10
1826
2187
Need More Gold
Ural School Programming Contest 2024
6
2282
2192
My Grandfather
ICPC Ural Regional Contest Qualifier 2022
15
1463
2195
Binary Trees
ICPC Ural Regional Contest Qualifier 2023
9
1925
2198
Deep Understanding
ICPC Ural Regional Contest Qualifier 2024
13
1586
Solved problems:
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