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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
2585
580
1008
Image Encoding
USTU PhysTech Cup 2000
4186
358
1016
Cube on the Walk
USU Local Contest. 1999
1859
801
1022
Genealogical Tree
Autumn School Contest 2000
10728
139
1033
Labyrinth
Ural Championship 1999
6427
232
1035
Cross-stitch
Ural Championship 1999
1112
1326
1040
Airline Company
USU Championship 2000
1486
988
1045
Funny Game
USU Local Contest. March 2000
2823
515
1056
Centers of the Net
NEERC 2000 Central Subregional
2665
545
1065
Frontier
NEERC 2000
989
1381
1069
Prufer Code
USU Personal Contest 2001
2588
516
1072
Routing
USU Personal Contest 2001
2726
490
1076
Trash
1899
698
1077
Travelling Tours
1209
396
1080
Map Coloring
Winter Mathematical Festival Varna 2001
6647
199
1085
Meeting
Spring School Contest 2001
2126
615
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1779
698
1099
Work Scheduling
973
1150
1106
Two Teams
Tetrahedron Team Online Contest May 2001
6465
74
1109
Conference
Bulgarian Online Contest September 2001
1947
247
1119
Metro
Autumn School Contest 2001
6749
71
1124
Mosaic
USU Championship 2001
1620
297
1128
Partition into Groups
USU Championship 2001
1163
412
1129
Door Painting
USU Championship 2001
1111
431
1136
Parliament
NEERC 2001 Central Subregional
4870
99
1137
Bus Routes
NEERC 2001 Central Subregional
1456
330
1145
Rope in the Labyrinth
DSAP Vietnam Online Contest November 2001
1300
369
1156
Two Rounds
Ural Championship 2001. Round 2
1472
327
1160
Network
NEERC 2001 Northern Subregional
2961
165
1162
Currency Exchange
NEERC 2001 Northern Subregional
2090
231
1176
Hyperchannels
USU Personal Contest 2002
1404
343
1182
Team Them Up!
NEERC 2001
928
518
1198
Jobbery
1004
499
1199
Mouse
124
3435
1205
By the Underground or by Foot?
USU Local Contest. March 2002
2052
236
1208
Legendary Teams Contest
USU Local Contest. March 2002
2290
211
1210
Kind Spirits
Autumn School Contest 2002
3010
162
1218
Episode N-th: The Jedi Tournament
USU Championship 2002
1521
320
1227
Rally Championship
NEERC 2002 Central Subregional
1622
300
1237
Evacuation Plan
NEERC 2002
496
971
1242
Werewolf
USU Personal Contest 2003
2735
179
1250
Sea Burial
USU Local Contest. March 2003
670
724
1254
Die Hard
USU Local Contest. March 2003
759
640
1270
Unicube
USU Championship 2003
197
2398
1271
Sailing Directions
USU Championship 2003
95
4727
1272
Non-Yekaterinburg Subway
USU Championship 2003
3329
149
1277
Cops and Thieves
NEERC 2003 Central Subregional
620
788
1280
Topological Sorting
NEERC 2003 Central Subregional
3484
142
1281
River Basin
NEERC 2003 Central Subregional
347
1391
1291
Gear-wheels
Spring School Contest 2004
1273
389
1301
Cube in Labyrinth
Ural Championship 1998
659
746
1314
Chase in Subway
Ural Championship 2004. Round 1
832
593
1315
MDPAR and MIIAR
Ural Championship 2004. Round 1
251
1912
1320
Graph Decomposition
Ural Championship 2004. Round 2
1706
291
1323
Classmates
Ural Championship 2004. Round 2
602
816
1325
Dirt
Ural Championship 2004. Round 2
910
543
1329
Galactic History
Autumn School Contest 2004
1077
462
1337
Bureaucracy
Autumn School Contest 2004
316
1540
1338
Automobiles
USU Championship 2004
273
1780
1339
Babies
USU Championship 2004
571
867
1358
Cables
Spring School Contest 2005
916
544
1361
Spaceology vs. Chronistics
Ural Championship 2005. Round 2
235
2059
1367
Top Secret
Ural Championship 2005. Round 2
154
3076
1379
Cups Transportation
Ural Championship 2005. Round 1
769
649
1392
Dreaming of Stars
652
764
1399
Economical Director
32
10956
1400
Cellular Characters
Autumn School Contest 2005
915
547
1416
Confidential
USU Championship 2005
1243
402
1419
Maps of the Island Worlds
USU Championship 2005
405
1215
1421
Credit Operations
Timus Top Coders: First Challenge
905
539
1434
Buses in Vasyuki
USU Personal Contest 2006
488
987
1441
From the History of Gringotts Bank
Ural Championship 2006
417
1144
1447
Portkey Network
Ural Championship 2006
477
1003
1449
Credit Operations 2
Timus Top Coders: Second Challenge
319
1477
1450
Russian Pipelines
Timus Top Coders: Second Challenge
2868
169
1479
Scheduled Checking
Petrozavodsk Summer 2006. Ural+Orel Contest
93
4564
1487
Chinese Football
USU Championship 2006
362
1260
1500
Pass Licenses
NEERC 2006 Eastern Subregional
720
639
1505
Oil Transfer
NEERC 2006 Eastern Subregional
151
2899
1527
Bad Roads
Petrozavodsk Winter 2007. D.Gozman Contest
378
1174
1533
Fat Hobbits
USU Personal Contest 2007
431
1030
1544
Classmates 3
Ural Championship 2007
356
1228
1557
Network Attack
Petrozavodsk Summer 2007. NSU Contest
233
1790
1569
Networking the “Iset”
USU Championship 2007
443
957
1575
Yekaterinburg Subway 2
Autumn School Contest 2007
479
885
1580
Dean's Debts
Autumn School Contest 2007
486
873
1610
Cactuses
Ural Championship 2008
204
1950
1623
Fractal Labyrinth
Petrozavodsk Winter 2008. ITMO Contest
117
3186
1630
Talisman
USU Championship 2008
391
997
1641
Duties
Autumn School Contest 2008
796
494
1643
Attack of the Dark Fortress
Autumn School Contest 2008
935
422
1651
Shortest Subchain
NEERC 2008 Eastern Subregional
1142
345
1652
Banking Crisis
NEERC 2008 Eastern Subregional
137
2707
1664
Pipeline Transportation
Petrozavodsk Winter 2008. USU Contest
194
1929
1676
Mortal Kombat
Petrozavodsk Summer 2008. USU Contest
218
1718
1691
Algorithm Complexity
Petrozavodsk Winter 2009. USU Contest
109
3246
1699
Turning Turtles
Petrozavodsk Winter 2009. USU Contest
354
1061
1709
Penguin-Avia
Ural Championship 2009
2511
152
1721
Two Sides of the Same Coin
NEERC 2009 Eastern Subregional
640
567
1742
Team building
Petrozavodsk Summer 2009. Ufa SATU Contest
1186
301
1770
The Party of Ural Champions
Ural Championship 2010
202
1666
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1438
233
1833
Hopes of Rowing
Ural Championship 2011
150
2014
1837
Isenbaev's Number
Ural Championship 2011
5483
59
1847
Zamkadye
Petrozavodsk Summer 2010. USU Contest
59
4512
1882
Old Nokia
Ural Regional School Programming Contest 2011
107
2638
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
671
453
1905
Travel in Time
Ural Championship 2012
249
1088
1912
Titan Ruins: Passing through Walls
NEERC 2012 Eastern Subregional
224
1202
1930
Ivan's Car
Ural Regional School Programming Contest 2012
1678
166
1934
Black Spot
Ural FU Championship 2012
821
337
1966
Cycling Roads
Ural FU Personal Contest 2013
380
675
1980
Road to Investor
Ural Championship 2013
406
626
1982
Electrification Plan
Ural FU Championship 2013
1935
131
2013
Neither shaken nor stirred
NEERC 2014 Eastern Subregional
246
898
2017
Best of a bad lot
NEERC 2014 Eastern Subregional
169
1284
2030
Awesome Backup System
Ural Regional School Programming Contest 2014
468
479
2034
Caravans
Ural Regional School Programming Contest 2014
781
289
2038
Minimum Vertex Cover
Petrozavodsk Summer 2014. Ural FU Dandelion Contest
82
2471
2055
Urban Geography
Ural Championship 2015
138
1458
2093
All Roads Lead to Snowdrift
Ural FU Personal Contest 2014
128
1355
2113
Survive the flood
University academic school olympiad in informatics 2019
308
388
2127
Determinant of a Graph
Petrozavodsk Summer 2018. umnik_team Contest
23
3678
2128
Rubina's Solitaire
Later is better than never
110
973
2132
Graph Decomposition. Version 2
Later is better than never
61
1644
2140
BitMazeCraft
Ural School Programming Contest 2019
96
1054
2147
City Building
Ural School Programming Contest 2019
56
1692
2155
Quadrocopter
Ural School Programming Contest 2020
84
898
2159
Essay
Ural School Programming Contest 2021
13
1444
2169
City Building 2
Ural School Programming Contest 2022
7
1948
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