Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
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Codeforces Round 941 (Div. 2)
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shortest paths

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Problems

#	Name
1392G	Omkar and Pies bitmasks, dfs and similar, dp, math, shortest paths	2900	x441
1387C	Viruses *special problem, dp, shortest paths, string suffix structures	2900	x122
1370F2	The Hidden Pair (Hard Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2700	x1232
1370F1	The Hidden Pair (Easy Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2400	x1354
1365D	Solve The Maze constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, shortest paths	1700	x16086
1360E	Polygon dp, graphs, implementation, shortest paths	1300	x24352
1349C	Orac and Game of Life dfs and similar, graphs, implementation, shortest paths	2000	x4220
1343E	Weights Distributing brute force, graphs, greedy, shortest paths, sortings	2100	x4803
1340C	Nastya and Unexpected Guest dfs and similar, dp, graphs, shortest paths	2400	x2018
1325E	Ehab's REAL Number Theory Problem brute force, dfs and similar, graphs, number theory, shortest paths	2600	x1799
1320E	Treeland and Viruses data structures, dfs and similar, dp, shortest paths, trees	3000	x617
1320B	Navigation System dfs and similar, graphs, shortest paths	1700	x5791
1307G	Cow and Exercise flows, graphs, shortest paths	3100	x473
1307D	Cow and Fields binary search, data structures, dfs and similar, graphs, greedy, shortest paths, sortings	1900	x6013
1304E	1-Trees and Queries data structures, dfs and similar, shortest paths, trees	2000	x4847
1301F	Super Jaber dfs and similar, graphs, implementation, shortest paths	2600	x1036
1283D	Christmas Trees graphs, greedy, shortest paths	1800	x7414
1272E	Nearest Opposite Parity dfs and similar, graphs, shortest paths	1900	x5834
1253F	Cheap Robot binary search, dsu, graphs, shortest paths, trees	2500	x1574
1250I	Show Must Go On binary search, brute force, greedy, shortest paths	3100	x126
1249E	By Elevator or Stairs? dp, shortest paths	1700	x9197
1245E	Hyakugoku and Ladders dp, probabilities, shortest paths	2300	x1107
1245D	Shichikuji and Power Grid dsu, graphs, greedy, shortest paths, trees	1900	x6863
1227E	Arson In Berland Forest binary search, graphs, graphs, shortest paths	2200	x1434
1218G	Alpha planetary system constructive algorithms, graphs, shortest paths	3000	x87
1209F	Koala and Notebook data structures, dfs and similar, graphs, shortest paths, strings, trees	2600	x1065
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x6281
1204C	Anna, Svyatoslav and Maps dp, graphs, greedy, shortest paths	1700	x6426
1202B	You Are Given a Decimal String... brute force, dp, shortest paths	1700	x4355
1201E2	Knightmare (hard) graphs, interactive, shortest paths	3000	x140
1201E1	Knightmare (easy) graphs, interactive, shortest paths	2900	x125
1197E	Culture Code binary search, combinatorics, data structures, dp, shortest paths, sortings	2300	x1450
1196F	K-th Path brute force, constructive algorithms, shortest paths, sortings	2200	x2299
1184E2	Daleks' Invasion (medium) dfs and similar, graphs, shortest paths, trees	2100	x897
1184B3	The Doctor Meets Vader (Hard) flows, shortest paths	2700	x166
1184B2	The Doctor Meets Vader (Medium) flows, graph matchings, graphs, shortest paths, sortings	2200	x537
1183E	Subsequences (easy version) dp, graphs, implementation, shortest paths	2000	x4503
1176E	Cover it! dfs and similar, dsu, graphs, shortest paths, trees	1700	x10404
1163F	Indecisive Taxi Fee data structures, graphs, shortest paths	3000	x817
1140G	Double Tree data structures, divide and conquer, shortest paths, trees	2700	x449
1106D	Lunar New Year and a Wander data structures, dfs and similar, graphs, greedy, shortest paths	1500	x13875
1105D	Kilani and the Game dfs and similar, graphs, implementation, shortest paths	1900	x3973
1081D	Maximum Distance dsu, graphs, shortest paths, sortings	1800	x3875
1076D	Edge Deletion graphs, greedy, shortest paths	1800	x4889
1070A	Find a Number dp, graphs, number theory, shortest paths	2200	x2259
1067B	Multihedgehog dfs and similar, graphs, shortest paths	1800	x2505
1065D	Three Pieces dfs and similar, dp, shortest paths	2200	x1268
1063B	Labyrinth graphs, shortest paths	1800	x7041
1051F	The Shortest Statement graphs, shortest paths, trees	2400	x2653
1043F	Make It One bitmasks, combinatorics, dp, math, number theory, shortest paths	2500	x2170
1037D	Valid BFS? dfs and similar, graphs, shortest paths, trees	1700	x13743
1005F	Berland and the Shortest Paths brute force, dfs and similar, graphs, shortest paths	2100	x1605
1004E	Sonya and Ice Cream binary search, data structures, dp, greedy, shortest paths, trees	2400	x1007
986F	Oppa Funcan Style Remastered graphs, math, number theory, shortest paths	3300	x564
986A	Fair graphs, greedy, number theory, shortest paths	1600	x6511
983C	Elevator dp, graphs, shortest paths	2400	x801
954D	Fight Against Traffic dfs and similar, graphs, shortest paths	1600	x6285
938D	Buy a Ticket data structures, graphs, shortest paths	2000	x5016
936E	Iqea data structures, dfs and similar, divide and conquer, dsu, shortest paths, trees	3400	x182
919F	A Game With Numbers games, graphs, shortest paths	2600	x321
916C	Jamie and Interesting Graph constructive algorithms, graphs, shortest paths	1600	x4944
913E	Logical Expression bitmasks, dp, shortest paths	2400	x743
912D	Fishes data structures, graphs, greedy, probabilities, shortest paths	2100	x1934
877D	Olya and Energy Drinks data structures, dfs and similar, graphs, shortest paths	2100	x3941
852D	Exploration plan binary search, flows, graph matchings, shortest paths	2100	x944
843D	Dynamic Shortest Path graphs, shortest paths	3400	x750
827F	Dirty Arkady's Kitchen data structures, dp, graphs, shortest paths	3200	x383
821D	Okabe and City dfs and similar, graphs, shortest paths	2200	x1339
814E	An unavoidable detour for home combinatorics, dp, graphs, shortest paths	2600	x637
796D	Police Stations constructive algorithms, dfs and similar, dp, graphs, shortest paths, trees	2100	x5117
793D	Presents in Bankopolis dp, graphs, shortest paths	2100	x1572
793B	Igor and his way to work dfs and similar, graphs, implementation, shortest paths	1600	x4329
788C	The Great Mixing dfs and similar, graphs, shortest paths	2300	x2001
786B	Legacy data structures, graphs, shortest paths	2300	x5389
780D	Innokenty and a Football League 2-sat, graphs, greedy, implementation, shortest paths, strings	1900	x2838
773D	Perishable Roads dp, graphs, shortest paths	2700	x561
769C	Cycle In Maze *special problem, dfs and similar, graphs, greedy, shortest paths	1700	x2097
763D	Timofey and a flat tree data structures, graphs, hashing, shortest paths, trees	2900	x514
757F	Team Rocket Rises Again data structures, graphs, shortest paths	2800	x1065
755E	PolandBall and White-Red graph constructive algorithms, graphs, shortest paths	2400	x807
715B	Complete The Graph binary search, constructive algorithms, graphs, shortest paths	2300	x2656
689B	Mike and Shortcuts dfs and similar, graphs, greedy, shortest paths	1600	x5587
677D	Vanya and Treasure data structures, dp, graphs, shortest paths	2300	x1520
676D	Theseus and labyrinth graphs, implementation, shortest paths	2000	x1825
666B	World Tour graphs, shortest paths	2000	x2063
648E	Собери число graphs, shortest paths	2300	x83
605E	Intergalaxy Trips probabilities, shortest paths	2700	x1315
601A	The Two Routes graphs, shortest paths	1600	x11398
598D	Igor In the Museum dfs and similar, graphs, shortest paths	1700	x10311
590C	Three States dfs and similar, graphs, shortest paths	2200	x2603
585B	Phillip and Trains dfs and similar, graphs, shortest paths	1700	x3482
575G	Run for beer dfs and similar, shortest paths	2200	x865
567E	President and Roads dfs and similar, graphs, hashing, shortest paths	2200	x1601
558C	Amr and Chemistry brute force, graphs, greedy, math, shortest paths	1900	x3914
545E	Paths and Trees graphs, greedy, shortest paths	2000	x4372
543B	Destroying Roads constructive algorithms, graphs, shortest paths	2100	x3829
542E	Playing on Graph graphs, shortest paths	2600	x806
525D	Arthur and Walls constructive algorithms, data structures, graphs, greedy, shortest paths	2400	x1631
520B	Two Buttons dfs and similar, graphs, greedy, implementation, math, shortest paths	1400	x47718
507E	Breaking Good dfs and similar, dp, graphs, shortest paths	2100	x2589