Problemset - Codeforces

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Codeforces Round 940 (Div. 2)
5 days

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Difficulty: —

shortest paths

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Problems

#	Name
1392G	Omkar and Pies bitmasks, dfs and similar, dp, math, shortest paths	2900	x438
1387C	Viruses *special problem, dp, shortest paths, string suffix structures	2900	x121
1370F2	The Hidden Pair (Hard Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2700	x1222
1370F1	The Hidden Pair (Easy Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2400	x1344
1365D	Solve The Maze constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, shortest paths	1700	x16041
1360E	Polygon dp, graphs, implementation, shortest paths	1300	x24320
1349C	Orac and Game of Life dfs and similar, graphs, implementation, shortest paths	2000	x4217
1343E	Weights Distributing brute force, graphs, greedy, shortest paths, sortings	2100	x4797
1340C	Nastya and Unexpected Guest dfs and similar, dp, graphs, shortest paths	2400	x2015
1325E	Ehab's REAL Number Theory Problem brute force, dfs and similar, graphs, number theory, shortest paths	2600	x1793
1320E	Treeland and Viruses data structures, dfs and similar, dp, shortest paths, trees	3000	x614
1320B	Navigation System dfs and similar, graphs, shortest paths	1700	x5745
1307G	Cow and Exercise flows, graphs, shortest paths	3100	x467
1307D	Cow and Fields binary search, data structures, dfs and similar, graphs, greedy, shortest paths, sortings	1900	x5954
1304E	1-Trees and Queries data structures, dfs and similar, shortest paths, trees	2000	x4835
1301F	Super Jaber dfs and similar, graphs, implementation, shortest paths	2600	x1035
1283D	Christmas Trees graphs, greedy, shortest paths	1800	x7396
1272E	Nearest Opposite Parity dfs and similar, graphs, shortest paths	1900	x5813
1253F	Cheap Robot binary search, dsu, graphs, shortest paths, trees	2500	x1572
1250I	Show Must Go On binary search, brute force, greedy, shortest paths	3100	x126
1249E	By Elevator or Stairs? dp, shortest paths	1700	x9181
1245E	Hyakugoku and Ladders dp, probabilities, shortest paths	2300	x1106
1245D	Shichikuji and Power Grid dsu, graphs, greedy, shortest paths, trees	1900	x6833
1227E	Arson In Berland Forest binary search, graphs, graphs, shortest paths	2200	x1432
1218G	Alpha planetary system constructive algorithms, graphs, shortest paths	3000	x86
1209F	Koala and Notebook data structures, dfs and similar, graphs, shortest paths, strings, trees	2600	x1063
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x6277
1204C	Anna, Svyatoslav and Maps dp, graphs, greedy, shortest paths	1700	x6422
1202B	You Are Given a Decimal String... brute force, dp, shortest paths	1700	x4348
1201E2	Knightmare (hard) graphs, interactive, shortest paths	3000	x139
1201E1	Knightmare (easy) graphs, interactive, shortest paths	2900	x124
1197E	Culture Code binary search, combinatorics, data structures, dp, shortest paths, sortings	2300	x1445
1196F	K-th Path brute force, constructive algorithms, shortest paths, sortings	2200	x2294
1184E2	Daleks' Invasion (medium) dfs and similar, graphs, shortest paths, trees	2100	x893
1184B3	The Doctor Meets Vader (Hard) flows, shortest paths	2700	x165
1184B2	The Doctor Meets Vader (Medium) flows, graph matchings, graphs, shortest paths, sortings	2200	x535
1183E	Subsequences (easy version) dp, graphs, implementation, shortest paths	2000	x4493
1176E	Cover it! dfs and similar, dsu, graphs, shortest paths, trees	1700	x10359
1163F	Indecisive Taxi Fee data structures, graphs, shortest paths	3000	x811
1140G	Double Tree data structures, divide and conquer, shortest paths, trees	2700	x445
1106D	Lunar New Year and a Wander data structures, dfs and similar, graphs, greedy, shortest paths	1500	x13834
1105D	Kilani and the Game dfs and similar, graphs, implementation, shortest paths	1900	x3968
1081D	Maximum Distance dsu, graphs, shortest paths, sortings	1800	x3872
1076D	Edge Deletion graphs, greedy, shortest paths	1800	x4878
1070A	Find a Number dp, graphs, number theory, shortest paths	2200	x2256
1067B	Multihedgehog dfs and similar, graphs, shortest paths	1800	x2504
1065D	Three Pieces dfs and similar, dp, shortest paths	2200	x1264
1063B	Labyrinth graphs, shortest paths	1800	x7013
1051F	The Shortest Statement graphs, shortest paths, trees	2400	x2643
1043F	Make It One bitmasks, combinatorics, dp, math, number theory, shortest paths	2500	x2162
1037D	Valid BFS? dfs and similar, graphs, shortest paths, trees	1700	x13690
1005F	Berland and the Shortest Paths brute force, dfs and similar, graphs, shortest paths	2100	x1593
1004E	Sonya and Ice Cream binary search, data structures, dp, greedy, shortest paths, trees	2400	x1005
986F	Oppa Funcan Style Remastered graphs, math, number theory, shortest paths	3300	x563
986A	Fair graphs, greedy, number theory, shortest paths	1600	x6501
983C	Elevator dp, graphs, shortest paths	2400	x800
954D	Fight Against Traffic dfs and similar, graphs, shortest paths	1600	x6274
938D	Buy a Ticket data structures, graphs, shortest paths	2000	x5005
936E	Iqea data structures, dfs and similar, divide and conquer, dsu, shortest paths, trees	3400	x181
919F	A Game With Numbers games, graphs, shortest paths	2600	x320
916C	Jamie and Interesting Graph constructive algorithms, graphs, shortest paths	1600	x4939
913E	Logical Expression bitmasks, dp, shortest paths	2400	x741
912D	Fishes data structures, graphs, greedy, probabilities, shortest paths	2100	x1932
877D	Olya and Energy Drinks data structures, dfs and similar, graphs, shortest paths	2100	x3933
852D	Exploration plan binary search, flows, graph matchings, shortest paths	2100	x942
843D	Dynamic Shortest Path graphs, shortest paths	3400	x743
827F	Dirty Arkady's Kitchen data structures, dp, graphs, shortest paths	3200	x378
821D	Okabe and City dfs and similar, graphs, shortest paths	2200	x1337
814E	An unavoidable detour for home combinatorics, dp, graphs, shortest paths	2600	x636
796D	Police Stations constructive algorithms, dfs and similar, dp, graphs, shortest paths, trees	2100	x5100
793D	Presents in Bankopolis dp, graphs, shortest paths	2100	x1569
793B	Igor and his way to work dfs and similar, graphs, implementation, shortest paths	1600	x4325
788C	The Great Mixing dfs and similar, graphs, shortest paths	2300	x1999
786B	Legacy data structures, graphs, shortest paths	2300	x5367
780D	Innokenty and a Football League 2-sat, graphs, greedy, implementation, shortest paths, strings	1900	x2837
773D	Perishable Roads dp, graphs, shortest paths	2700	x560
769C	Cycle In Maze *special problem, dfs and similar, graphs, greedy, shortest paths	1700	x2093
763D	Timofey and a flat tree data structures, graphs, hashing, shortest paths, trees	2900	x508
757F	Team Rocket Rises Again data structures, graphs, shortest paths	2800	x1063
755E	PolandBall and White-Red graph constructive algorithms, graphs, shortest paths	2400	x806
715B	Complete The Graph binary search, constructive algorithms, graphs, shortest paths	2300	x2652
689B	Mike and Shortcuts dfs and similar, graphs, greedy, shortest paths	1600	x5581
677D	Vanya and Treasure data structures, dp, graphs, shortest paths	2300	x1518
676D	Theseus and labyrinth graphs, implementation, shortest paths	2000	x1823
666B	World Tour graphs, shortest paths	2000	x2055
648E	Собери число graphs, shortest paths	2300	x82
605E	Intergalaxy Trips probabilities, shortest paths	2700	x1311
601A	The Two Routes graphs, shortest paths	1600	x11378
598D	Igor In the Museum dfs and similar, graphs, shortest paths	1700	x10271
590C	Three States dfs and similar, graphs, shortest paths	2200	x2599
585B	Phillip and Trains dfs and similar, graphs, shortest paths	1700	x3479
575G	Run for beer dfs and similar, shortest paths	2200	x863
567E	President and Roads dfs and similar, graphs, hashing, shortest paths	2200	x1596
558C	Amr and Chemistry brute force, graphs, greedy, math, shortest paths	1900	x3905
545E	Paths and Trees graphs, greedy, shortest paths	2000	x4363
543B	Destroying Roads constructive algorithms, graphs, shortest paths	2100	x3823
542E	Playing on Graph graphs, shortest paths	2600	x805
525D	Arthur and Walls constructive algorithms, data structures, graphs, greedy, shortest paths	2400	x1629
520B	Two Buttons dfs and similar, graphs, greedy, implementation, math, shortest paths	1400	x47580
507E	Breaking Good dfs and similar, dp, graphs, shortest paths	2100	x2587