Problemset - Codeforces

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Educational Codeforces Round 97 (Rated for Div. 2)
46:29:14
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shortest paths

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Problems

#	Name
1433G	Reducing Delivery Cost brute force, graphs, shortest paths	2100	x1813
1421D	Hexagons brute force, constructive algorithms, greedy, implementation, math, shortest paths	1900	x2642
1422D	Returning Home graphs, shortest paths, sortings	2300	x1535
1418C	Mortal Kombat Tower dp, graphs, greedy, shortest paths	1500	x8356
1407E	Egor in the Republic of Dagestan constructive algorithms, dfs and similar, dp, graphs, greedy, shortest paths	2500	x960
1392G	Omkar and Pies bitmasks, dfs and similar, dp, math, shortest paths	2900	x208
1393D	Rarity and New Dress dfs and similar, dp, implementation, shortest paths	2100	x2768
1387C	Viruses *special problem, dp, shortest paths, string suffix structures	2900	x49
1370F2	The Hidden Pair (Hard Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2700	x809
1370F1	The Hidden Pair (Easy Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2400	x915
1365D	Solve The Maze constructive algorithms, dfs and similar, dsu, graphs, greedy, implementation, shortest paths	1700	x8881
1360E	Polygon dp, graphs, implementation, shortest paths	1300	x14965
1349C	Orac and Game of Life dfs and similar, graphs, implementation, shortest paths	2000	x3117
1343E	Weights Distributing brute force, graphs, greedy, shortest paths, sortings	2100	x3428
1340C	Nastya and Unexpected Guest dfs and similar, dp, graphs, shortest paths	2400	x1492
1325E	Ehab's REAL Number Theory Problem brute force, dfs and similar, graphs, number theory, shortest paths	2600	x1214
1320E	Treeland and Viruses data structures, dfs and similar, dp, shortest paths, trees	3000	x284
1320B	Navigation System dfs and similar, graphs, shortest paths	1700	x4313
1307G	Cow and Exercise flows, graphs, shortest paths	3100	x159
1307D	Cow and Fields binary search, data structures, dfs and similar, graphs, greedy, shortest paths, sortings	1900	x4019
1304E	1-Trees and Queries data structures, dfs and similar, shortest paths, trees	2000	x3062
1301F	Super Jaber dfs and similar, graphs, implementation, shortest paths	2600	x633
1283D	Christmas Trees graphs, greedy, shortest paths	1800	x4604
1272E	Nearest Opposite Parity dfs and similar, graphs, shortest paths	1900	x3276
1227E	Arson In Berland Forest binary search, graphs, shortest paths	2200	x1053
1253F	Cheap Robot binary search, dsu, graphs, shortest paths, trees	2500	x691
1245E	Hyakugoku and Ladders dp, probabilities, shortest paths	2300	x834
1245D	Shichikuji and Power Grid dsu, graphs, greedy, shortest paths, trees	1900	x3688
1250I	Show Must Go On binary search, brute force, greedy, shortest paths	3100	x96
1249E	By Elevator or Stairs? dp, shortest paths	1700	x5459
1218G	Alpha planetary system constructive algorithms, graphs, shortest paths	3000	x20
1209F	Koala and Notebook data structures, dfs and similar, graphs, shortest paths, strings, trees	2600	x552
1204C	Anna, Svyatoslav and Maps dp, graphs, greedy, shortest paths	1700	x4973
1205B	Shortest Cycle bitmasks, brute force, graphs, shortest paths	1900	x4425
1202B	You Are Given a Decimal String... brute force, dp, shortest paths	1700	x3365
1201E2	Knightmare (hard) graphs, interactive, shortest paths	3000	x81
1201E1	Knightmare (easy) graphs, interactive, shortest paths	2900	x71
1196F	K-th Path brute force, constructive algorithms, shortest paths, sortings	2200	x1452
1197E	Culture Code binary search, combinatorics, data structures, dp, shortest paths, sortings	2300	x989
1184E2	Daleks' Invasion (medium) dfs and similar, graphs, shortest paths, trees	2100	x623
1184B3	The Doctor Meets Vader (Hard) flows, shortest paths	2700	x127
1184B2	The Doctor Meets Vader (Medium) flows, graph matchings, graphs, shortest paths, sortings	2200	x413
1183E	Subsequences (easy version) dp, graphs, implementation, shortest paths	2000	x2965
1176E	Cover it! dfs and similar, dsu, graphs, shortest paths, trees	1700	x5278
1163F	Indecisive Taxi Fee data structures, graphs, shortest paths	3000	x195
1140G	Double Tree data structures, divide and conquer, shortest paths, trees	2700	x173
1106D	Lunar New Year and a Wander data structures, dfs and similar, graphs, greedy, shortest paths	1500	x8315
1105D	Kilani and the Game dfs and similar, graphs, implementation, shortest paths	1900	x2958
1081D	Maximum Distance dsu, graphs, shortest paths, sortings	1800	x2497
1076D	Edge Deletion graphs, greedy, shortest paths	1800	x3007
1043F	Make It One bitmasks, combinatorics, dp, math, number theory, shortest paths	2500	x1083
1067B	Multihedgehog dfs and similar, graphs, shortest paths	1800	x1813
1070A	Find a Number dp, graphs, number theory, shortest paths	2200	x1538
1063B	Labyrinth graphs, shortest paths	1800	x4137
1065D	Three Pieces dfs and similar, dp, shortest paths	2200	x961
1051F	The Shortest Statement graphs, shortest paths, trees	2400	x1297
1037D	Valid BFS? dfs and similar, graphs, shortest paths, trees	1700	x7539
1005F	Berland and the Shortest Paths brute force, dfs and similar, graphs, shortest paths	2100	x884
1004E	Sonya and Ice Cream binary search, data structures, dp, greedy, shortest paths, trees	2400	x615
986F	Oppa Funcan Style Remastered graphs, math, number theory, shortest paths	3300	x203
986A	Fair graphs, greedy, number theory, shortest paths	1600	x4465
983C	Elevator dp, graphs, shortest paths	2400	x687
954D	Fight Against Traffic dfs and similar, graphs, shortest paths	1600	x3893
936E	Iqea data structures, dfs and similar, divide and conquer, dsu, shortest paths, trees	3400	x123
938D	Buy a Ticket data structures, graphs, shortest paths	2000	x2856
919F	A Game With Numbers games, graphs, shortest paths	2600	x206
916C	Jamie and Interesting Graph constructive algorithms, graphs, shortest paths	1600	x3719
913E	Logical Expression bitmasks, dp, shortest paths	2400	x578
912D	Fishes data structures, graphs, greedy, probabilities, shortest paths	2100	x1398
877D	Olya and Energy Drinks data structures, dfs and similar, graphs, shortest paths	2100	x2428
852D	Exploration plan binary search, flows, graph matchings, shortest paths	2100	x563
843D	Dynamic Shortest Path graphs, shortest paths	3400	x267
827F	Dirty Arkady's Kitchen data structures, dp, graphs, shortest paths	3200	x124
821D	Okabe and City dfs and similar, graphs, shortest paths	2200	x906
814E	An unavoidable detour for home combinatorics, dp, graphs, shortest paths	2600	x441
773D	Perishable Roads dp, graphs, shortest paths	2700	x377
793D	Presents in Bankopolis dp, graphs, shortest paths	2100	x1099
793B	Igor and his way to work dfs and similar, graphs, implementation, shortest paths	1600	x3094
796D	Police Stations constructive algorithms, dfs and similar, dp, graphs, shortest paths, trees	2100	x2570
788C	The Great Mixing dfs and similar, graphs, shortest paths	2300	x1534
786B	Legacy data structures, graphs, shortest paths	2300	x2037
780D	Innokenty and a Football League 2-sat, graphs, greedy, implementation, shortest paths, strings	1900	x2464
769C	Cycle In Maze *special problem, dfs and similar, graphs, greedy, shortest paths	1700	x1302
763D	Timofey and a flat tree data structures, graphs, hashing, shortest paths, trees	2900	x269
755E	PolandBall and White-Red graph constructive algorithms, graphs, shortest paths	2400	x643
757F	Team Rocket Rises Again data structures, graphs, shortest paths	2800	x572
715B	Complete The Graph binary search, constructive algorithms, graphs, shortest paths	2300	x1721
689B	Mike and Shortcuts dfs and similar, graphs, greedy, shortest paths	1600	x4065
677D	Vanya and Treasure data structures, dp, graphs, shortest paths	2300	x1128
676D	Theseus and labyrinth graphs, implementation, shortest paths	2000	x1531
666B	World Tour graphs, shortest paths	2000	x1526
605E	Intergalaxy Trips probabilities, shortest paths	2700	x567
601A	The Two Routes graphs, shortest paths	1600	x7563
598D	Igor In the Museum dfs and similar, graphs, shortest paths	1700	x6021
590C	Three States dfs and similar, graphs, shortest paths	2200	x1828
585B	Phillip and Trains dfs and similar, graphs, shortest paths	1700	x2911
575G	Run for beer dfs and similar, shortest paths	2200	x619
567E	President and Roads dfs and similar, graphs, hashing, shortest paths	2200	x1102
558C	Amr and Chemistry brute force, graphs, greedy, math, shortest paths	1900	x3248
545E	Paths and Trees graphs, greedy, shortest paths	2000	x2732

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