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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
2636
580
1008
Image Encoding
USTU PhysTech Cup 2000
4234
361
1016
Cube on the Walk
USU Local Contest. 1999
1873
811
1022
Genealogical Tree
Autumn School Contest 2000
10865
140
1033
Labyrinth
Ural Championship 1999
6502
233
1035
Cross-stitch
Ural Championship 1999
1120
1342
1040
Airline Company
USU Championship 2000
1503
996
1045
Funny Game
USU Local Contest. March 2000
2878
516
1056
Centers of the Net
NEERC 2000 Central Subregional
2708
546
1065
Frontier
NEERC 2000
999
1393
1069
Prufer Code
USU Personal Contest 2001
2641
515
1072
Routing
USU Personal Contest 2001
2746
496
1076
Trash
1915
706
1077
Travelling Tours
1234
396
1080
Map Coloring
Winter Mathematical Festival Varna 2001
7014
192
1085
Meeting
Spring School Contest 2001
2156
619
1096
Get the Right Route Plate!
USU Local Contest. March 2001
1805
702
1099
Work Scheduling
1002
1138
1106
Two Teams
Tetrahedron Team Online Contest May 2001
6584
74
1109
Conference
Bulgarian Online Contest September 2001
1964
249
1119
Metro
Autumn School Contest 2001
6960
71
1124
Mosaic
USU Championship 2001
1646
297
1128
Partition into Groups
USU Championship 2001
1193
409
1129
Door Painting
USU Championship 2001
1142
428
1136
Parliament
NEERC 2001 Central Subregional
4956
99
1137
Bus Routes
NEERC 2001 Central Subregional
1510
324
1145
Rope in the Labyrinth
DSAP Vietnam Online Contest November 2001
1356
361
1156
Two Rounds
Ural Championship 2001. Round 2
1498
327
1160
Network
NEERC 2001 Northern Subregional
3269
152
1162
Currency Exchange
NEERC 2001 Northern Subregional
2351
209
1176
Hyperchannels
USU Personal Contest 2002
1451
339
1182
Team Them Up!
NEERC 2001
957
512
1198
Jobbery
1044
488
1199
Mouse
128
3405
1205
By the Underground or by Foot?
USU Local Contest. March 2002
2075
237
1208
Legendary Teams Contest
USU Local Contest. March 2002
2325
212
1210
Kind Spirits
Autumn School Contest 2002
3054
163
1218
Episode N-th: The Jedi Tournament
USU Championship 2002
1544
321
1227
Rally Championship
NEERC 2002 Central Subregional
1656
300
1237
Evacuation Plan
NEERC 2002
501
979
1242
Werewolf
USU Personal Contest 2003
2806
178
1250
Sea Burial
USU Local Contest. March 2003
683
724
1254
Die Hard
USU Local Contest. March 2003
776
638
1270
Unicube
USU Championship 2003
202
2384
1271
Sailing Directions
USU Championship 2003
98
4679
1272
Non-Yekaterinburg Subway
USU Championship 2003
3399
148
1277
Cops and Thieves
NEERC 2003 Central Subregional
631
789
1280
Topological Sorting
NEERC 2003 Central Subregional
3557
142
1281
River Basin
NEERC 2003 Central Subregional
353
1393
1291
Gear-wheels
Spring School Contest 2004
1310
385
1301
Cube in Labyrinth
Ural Championship 1998
674
742
1314
Chase in Subway
Ural Championship 2004. Round 1
850
591
1315
MDPAR and MIIAR
Ural Championship 2004. Round 1
258
1896
1320
Graph Decomposition
Ural Championship 2004. Round 2
1761
287
1323
Classmates
Ural Championship 2004. Round 2
604
827
1325
Dirt
Ural Championship 2004. Round 2
931
540
1329
Galactic History
Autumn School Contest 2004
1095
462
1337
Bureaucracy
Autumn School Contest 2004
318
1557
1338
Automobiles
USU Championship 2004
276
1792
1339
Babies
USU Championship 2004
583
864
1358
Cables
Spring School Contest 2005
934
543
1361
Spaceology vs. Chronistics
Ural Championship 2005. Round 2
254
1944
1367
Top Secret
Ural Championship 2005. Round 2
162
2984
1379
Cups Transportation
Ural Championship 2005. Round 1
810
628
1392
Dreaming of Stars
664
764
1399
Economical Director
34
10676
1400
Cellular Characters
Autumn School Contest 2005
928
549
1416
Confidential
USU Championship 2005
1286
396
1419
Maps of the Island Worlds
USU Championship 2005
412
1216
1421
Credit Operations
Timus Top Coders: First Challenge
915
543
1434
Buses in Vasyuki
USU Personal Contest 2006
502
978
1441
From the History of Gringotts Bank
Ural Championship 2006
426
1142
1447
Portkey Network
Ural Championship 2006
488
1000
1449
Credit Operations 2
Timus Top Coders: Second Challenge
323
1487
1450
Russian Pipelines
Timus Top Coders: Second Challenge
3165
156
1479
Scheduled Checking
Petrozavodsk Summer 2006. Ural+Orel Contest
97
4482
1487
Chinese Football
USU Championship 2006
367
1269
1500
Pass Licenses
NEERC 2006 Eastern Subregional
741
634
1505
Oil Transfer
NEERC 2006 Eastern Subregional
153
2921
1527
Bad Roads
Petrozavodsk Winter 2007. D.Gozman Contest
388
1169
1533
Fat Hobbits
USU Personal Contest 2007
447
1015
1544
Classmates 3
Ural Championship 2007
360
1241
1557
Network Attack
Petrozavodsk Summer 2007. NSU Contest
236
1809
1569
Networking the “Iset”
USU Championship 2007
463
938
1575
Yekaterinburg Subway 2
Autumn School Contest 2007
501
867
1580
Dean's Debts
Autumn School Contest 2007
489
888
1610
Cactuses
Ural Championship 2008
206
1980
1623
Fractal Labyrinth
Petrozavodsk Winter 2008. ITMO Contest
121
3170
1630
Talisman
USU Championship 2008
397
1008
1641
Duties
Autumn School Contest 2008
812
498
1643
Attack of the Dark Fortress
Autumn School Contest 2008
959
422
1651
Shortest Subchain
NEERC 2008 Eastern Subregional
1175
345
1652
Banking Crisis
NEERC 2008 Eastern Subregional
140
2724
1664
Pipeline Transportation
Petrozavodsk Winter 2008. USU Contest
196
1963
1676
Mortal Kombat
Petrozavodsk Summer 2008. USU Contest
220
1750
1691
Algorithm Complexity
Petrozavodsk Winter 2009. USU Contest
114
3203
1699
Turning Turtles
Petrozavodsk Winter 2009. USU Contest
357
1082
1709
Penguin-Avia
Ural Championship 2009
2575
153
1721
Two Sides of the Same Coin
NEERC 2009 Eastern Subregional
652
573
1742
Team building
Petrozavodsk Summer 2009. Ufa SATU Contest
1209
304
1770
The Party of Ural Champions
Ural Championship 2010
205
1696
1806
Mobile Telegraphs
NEERC 2010 Eastern Subregional
1727
201
1833
Hopes of Rowing
Ural Championship 2011
151
2077
1837
Isenbaev's Number
Ural Championship 2011
5630
59
1847
Zamkadye
Petrozavodsk Summer 2010. USU Contest
65
4314
1882
Old Nokia
Ural Regional School Programming Contest 2011
107
2744
1888
Pilot Work Experience
NEERC 2011 Eastern Subregional
700
451
1905
Travel in Time
Ural Championship 2012
255
1112
1912
Titan Ruins: Passing through Walls
NEERC 2012 Eastern Subregional
228
1236
1930
Ivan's Car
Ural Regional School Programming Contest 2012
1759
166
1934
Black Spot
Ural FU Championship 2012
843
343
1966
Cycling Roads
Ural FU Personal Contest 2013
401
673
1980
Road to Investor
Ural Championship 2013
425
629
1982
Electrification Plan
Ural FU Championship 2013
2016
132
2013
Neither shaken nor stirred
NEERC 2014 Eastern Subregional
254
922
2017
Best of a bad lot
NEERC 2014 Eastern Subregional
175
1316
2030
Awesome Backup System
Ural Regional School Programming Contest 2014
481
494
2034
Caravans
Ural Regional School Programming Contest 2014
829
289
2038
Minimum Vertex Cover
Petrozavodsk Summer 2014. Ural FU Dandelion Contest
85
2538
2055
Urban Geography
Ural Championship 2015
145
1482
2093
All Roads Lead to Snowdrift
Ural FU Personal Contest 2014
143
1317
2113
Survive the flood
University academic school olympiad in informatics 2019
343
394
2127
Determinant of a Graph
Petrozavodsk Summer 2018. umnik_team Contest
26
3806
2128
Rubina's Solitaire
Later is better than never
131
939
2132
Graph Decomposition. Version 2
Later is better than never
82
1440
2140
BitMazeCraft
Ural School Programming Contest 2019
105
1109
2147
City Building
Ural School Programming Contest 2019
59
1848
2155
Quadrocopter
Ural School Programming Contest 2020
97
942
2159
Essay
Ural School Programming Contest 2021
27
1363
2169
City Building 2
Ural School Programming Contest 2022
14
2098
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