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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
2641
581
1008
Image Encoding
USTU PhysTech Cup 2000
4237
362
1016
Cube on the Walk
USU Local Contest. 1999
1877
813
1022
Genealogical Tree
Autumn School Contest 2000
10890
141
1033
Labyrinth
Ural Championship 1999
6514
234
1035
Cross-stitch
Ural Championship 1999
1120
1349
1040
Airline Company
USU Championship 2000
1503
1000
1045
Funny Game
USU Local Contest. March 2000
2882
517
1056
Centers of the Net
NEERC 2000 Central Subregional
2718
547
1065
Frontier
NEERC 2000
1004
1393
1069
Prufer Code
USU Personal Contest 2001
2650
516
1072
Routing
USU Personal Contest 2001
2749
497
1076
Trash
1922
706
1077
Travelling Tours
1236
397
1080
Map Coloring
Winter Mathematical Festival Varna 2001
7031
193
1085
Meeting
Spring School Contest 2001
2161
620
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1810
703
1099
Work Scheduling
1004
1141
1106
Two Teams
Tetrahedron Team Online Contest May 2001
6608
74
1109
Conference
Bulgarian Online Contest September 2001
1970
250
1119
Metro
Autumn School Contest 2001
6997
71
1124
Mosaic
USU Championship 2001
1649
298
1128
Partition into Groups
USU Championship 2001
1193
411
1129
Door Painting
USU Championship 2001
1149
427
1136
Parliament
NEERC 2001 Central Subregional
4973
99
1137
Bus Routes
NEERC 2001 Central Subregional
1515
325
1145
Rope in the Labyrinth
DSAP Vietnam Online Contest November 2001
1365
360
1156
Two Rounds
Ural Championship 2001. Round 2
1505
327
1160
Network
NEERC 2001 Northern Subregional
3289
152
1162
Currency Exchange
NEERC 2001 Northern Subregional
2359
209
1176
Hyperchannels
USU Personal Contest 2002
1455
339
1182
Team Them Up!
NEERC 2001
963
511
1198
Jobbery
1048
488
1199
Mouse
129
3397
1205
By the Underground or by Foot?
USU Local Contest. March 2002
2085
237
1208
Legendary Teams Contest
USU Local Contest. March 2002
2329
213
1210
Kind Spirits
Autumn School Contest 2002
3069
163
1218
Episode N-th: The Jedi Tournament
USU Championship 2002
1550
321
1227
Rally Championship
NEERC 2002 Central Subregional
1658
301
1237
Evacuation Plan
NEERC 2002
501
983
1242
Werewolf
USU Personal Contest 2003
2820
178
1250
Sea Burial
USU Local Contest. March 2003
684
726
1254
Die Hard
USU Local Contest. March 2003
779
638
1270
Unicube
USU Championship 2003
202
2394
1271
Sailing Directions
USU Championship 2003
100
4613
1272
Non-Yekaterinburg Subway
USU Championship 2003
3412
148
1277
Cops and Thieves
NEERC 2003 Central Subregional
632
791
1280
Topological Sorting
NEERC 2003 Central Subregional
3574
142
1281
River Basin
NEERC 2003 Central Subregional
359
1376
1291
Gear-wheels
Spring School Contest 2004
1319
383
1301
Cube in Labyrinth
Ural Championship 1998
675
744
1314
Chase in Subway
Ural Championship 2004. Round 1
855
590
1315
MDPAR and MIIAR
Ural Championship 2004. Round 1
264
1862
1320
Graph Decomposition
Ural Championship 2004. Round 2
1767
287
1323
Classmates
Ural Championship 2004. Round 2
611
822
1325
Dirt
Ural Championship 2004. Round 2
937
539
1329
Galactic History
Autumn School Contest 2004
1101
462
1337
Bureaucracy
Autumn School Contest 2004
319
1559
1338
Automobiles
USU Championship 2004
276
1799
1339
Babies
USU Championship 2004
587
862
1358
Cables
Spring School Contest 2005
941
541
1361
Spaceology vs. Chronistics
Ural Championship 2005. Round 2
254
1952
1367
Top Secret
Ural Championship 2005. Round 2
162
2996
1379
Cups Transportation
Ural Championship 2005. Round 1
815
626
1392
Dreaming of Stars
666
764
1399
Economical Director
34
10728
1400
Cellular Characters
Autumn School Contest 2005
935
547
1416
Confidential
USU Championship 2005
1294
395
1419
Maps of the Island Worlds
USU Championship 2005
413
1218
1421
Credit Operations
Timus Top Coders: First Challenge
918
543
1434
Buses in Vasyuki
USU Personal Contest 2006
506
975
1441
From the History of Gringotts Bank
Ural Championship 2006
430
1136
1447
Portkey Network
Ural Championship 2006
491
998
1449
Credit Operations 2
Timus Top Coders: Second Challenge
326
1480
1450
Russian Pipelines
Timus Top Coders: Second Challenge
3183
156
1479
Scheduled Checking
Petrozavodsk Summer 2006. Ural+Orel Contest
97
4502
1487
Chinese Football
USU Championship 2006
370
1264
1500
Pass Licenses
NEERC 2006 Eastern Subregional
744
635
1505
Oil Transfer
NEERC 2006 Eastern Subregional
153
2935
1527
Bad Roads
Petrozavodsk Winter 2007. D.Gozman Contest
389
1172
1533
Fat Hobbits
USU Personal Contest 2007
455
1003
1544
Classmates 3
Ural Championship 2007
361
1244
1557
Network Attack
Petrozavodsk Summer 2007. NSU Contest
238
1804
1569
Networking the “Iset”
USU Championship 2007
465
939
1575
Yekaterinburg Subway 2
Autumn School Contest 2007
508
860
1580
Dean's Debts
Autumn School Contest 2007
490
891
1610
Cactuses
Ural Championship 2008
206
1991
1623
Fractal Labyrinth
Petrozavodsk Winter 2008. ITMO Contest
123
3141
1630
Talisman
USU Championship 2008
400
1007
1641
Duties
Autumn School Contest 2008
814
500
1643
Attack of the Dark Fortress
Autumn School Contest 2008
964
423
1651
Shortest Subchain
NEERC 2008 Eastern Subregional
1180
345
1652
Banking Crisis
NEERC 2008 Eastern Subregional
141
2723
1664
Pipeline Transportation
Petrozavodsk Winter 2008. USU Contest
197
1966
1676
Mortal Kombat
Petrozavodsk Summer 2008. USU Contest
222
1746
1691
Algorithm Complexity
Petrozavodsk Winter 2009. USU Contest
114
3224
1699
Turning Turtles
Petrozavodsk Winter 2009. USU Contest
360
1080
1709
Penguin-Avia
Ural Championship 2009
2586
153
1721
Two Sides of the Same Coin
NEERC 2009 Eastern Subregional
654
576
1742
Team building
Petrozavodsk Summer 2009. Ufa SATU Contest
1216
305
1770
The Party of Ural Champions
Ural Championship 2010
205
1709
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1737
201
1833
Hopes of Rowing
Ural Championship 2011
153
2069
1837
Isenbaev's Number
Ural Championship 2011
5658
59
1847
Zamkadye
Petrozavodsk Summer 2010. USU Contest
65
4353
1882
Old Nokia
Ural Regional School Programming Contest 2011
107
2768
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
703
454
1905
Travel in Time
Ural Championship 2012
256
1119
1912
Titan Ruins: Passing through Walls
NEERC 2012 Eastern Subregional
229
1243
1930
Ivan's Car
Ural Regional School Programming Contest 2012
1783
165
1934
Black Spot
Ural FU Championship 2012
844
346
1966
Cycling Roads
Ural FU Personal Contest 2013
404
675
1980
Road to Investor
Ural Championship 2013
430
629
1982
Electrification Plan
Ural FU Championship 2013
2036
133
2013
Neither shaken nor stirred
NEERC 2014 Eastern Subregional
257
924
2017
Best of a bad lot
NEERC 2014 Eastern Subregional
177
1319
2030
Awesome Backup System
Ural Regional School Programming Contest 2014
486
496
2034
Caravans
Ural Regional School Programming Contest 2014
839
289
2038
Minimum Vertex Cover
Petrozavodsk Summer 2014. Ural FU Dandelion Contest
93
2372
2055
Urban Geography
Ural Championship 2015
148
1475
2093
All Roads Lead to Snowdrift
Ural FU Personal Contest 2014
146
1313
2113
Survive the flood
University academic school olympiad in informatics 2019
346
401
2127
Determinant of a Graph
Petrozavodsk Summer 2018. umnik_team Contest
28
3703
2128
Rubina's Solitaire
Later is better than never
134
946
2132
Graph Decomposition. Version 2
Later is better than never
84
1449
2140
BitMazeCraft
Ural School Programming Contest 2019
109
1103
2147
City Building
Ural School Programming Contest 2019
62
1823
2155
Quadrocopter
Ural School Programming Contest 2020
99
960
2159
Essay
Ural School Programming Contest 2021
32
1297
2169
City Building 2
Ural School Programming Contest 2022
18
1943
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