Problemset - Codeforces

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Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)
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Problems

#	Name
98B	Help King implementation, probabilities, trees	2200	x128
98A	Help Victoria the Wise brute force, implementation	1700	x1216
97E	Leaders dfs and similar, dsu, graphs, trees	2200	x383
97D	Robot in Basement bitmasks, brute force, implementation	2700	x248
97C	Winning Strategy binary search, graphs, math, shortest paths	2400	x303
97B	Superset constructive algorithms, divide and conquer	2300	x859
97A	Domino brute force, implementation	2400	x266
95E	Lucky Country dp, dsu, graphs	2500	x1524
95D	Horse Races dp, math	2500	x428
95C	Volleyball shortest paths	1900	x2815
95B	Lucky Numbers dp, greedy	1800	x1225
95A	Hockey implementation, strings	1600	x1681
93E	Lostborn dp, math, number theory	2600	x502
93D	Flags dp, math, matrices	2500	x352
93C	Azembler brute force, implementation	2500	x424
93B	End of Exams greedy	1900	x921
93A	Frames implementation	1700	x1966
91E	Igloo Skyscraper data structures, geometry	2500	x610
91D	Grocer's Problem constructive algorithms, graphs, greedy	2600	x272
91C	Ski Base combinatorics, dsu, graphs	2300	x886
89E	Fire and Ice greedy	2900	x100
89D	Space mines geometry	2500	x239
89C	Chip Play brute force, data structures, implementation	2300	x624
89B	Widget Library dp, expression parsing, graphs, implementation	2300	x526
89A	Robbery greedy	1800	x1483
87E	Mogohu-Rea Idol geometry	2600	x606
87D	Beautiful Road dfs and similar, dp, dsu, graphs, implementation, sortings, trees	2300	x909
87C	Interesting Game dp, games, math	2000	x1395
87B	Vasya and Types implementation, strings	1800	x1155
86E	Long sequence brute force, math, matrices	2700	x189
86D	Powerful array data structures, implementation, math, two pointers	2200	x13959
86C	Genetic engineering dp, string suffix structures, trees	2500	x728
86B	Tetris revisited constructive algorithms, graph matchings, greedy, math	2200	x415
86A	Reflection math	1600	x1392
85E	Guard Towers binary search, dsu, geometry, graphs, sortings	2600	x960
85D	Sum of Medians binary search, brute force, data structures, implementation	2300	x2061
85C	Petya and Tree binary search, dfs and similar, probabilities, sortings, trees	2200	x543
85B	Embassy Queue data structures, greedy	1800	x983
84C	Biathlon binary search, implementation	1700	x1713
83E	Two Subsequences bitmasks, dp	2800	x482
83D	Numbers dp, math, number theory	2400	x891
83C	Track graphs, greedy, shortest paths	2400	x433
83B	Doctor binary search, math, sortings	1800	x1706
82E	Corridor geometry	2600	x218
82D	Two out of Three dp	2000	x2048
82C	General Mobilization data structures, dfs and similar, sortings	2000	x811
82B	Sets constructive algorithms, hashing, implementation	1700	x2063
81E	Pairs dfs and similar, dp, dsu, graphs, implementation, trees	2700	x352
81D	Polycarp's Picture Gallery constructive algorithms, greedy	2100	x655
81C	Average Score greedy, math, sortings	1700	x1672
81B	Sequence Formatting implementation, strings	1700	x1957
79E	Security System math	2900	x136
79D	Password bitmasks, dp, shortest paths	2800	x1192
79C	Beaver data structures, dp, greedy, hashing, strings, two pointers	1800	x1816
78E	Evacuation flows, graphs, shortest paths	2300	x585
78D	Archer's Shot binary search, geometry, math, two pointers	2300	x330
78C	Beaver Game dp, games, number theory	2000	x1888
77E	Martian Food geometry	2800	x380
77D	Domino Carpet dp, implementation	2300	x329
77C	Beavermuncher-0xFF dfs and similar, dp, dsu, greedy, trees	2100	x1038
77B	Falling Anvils math, probabilities	1800	x2634
76F	Tourist binary search, data structures, dp	2300	x643
76E	Points implementation, math	1700	x1720
76D	Plus and xor dp, greedy, math	1700	x2078
76C	Mutation bitmasks, dp, math	2700	x316
76B	Mice greedy, two pointers	2100	x753
76A	Gift dsu, graphs, sortings, trees	2200	x1611
75E	Ship's Shortest Path geometry, shortest paths	2400	x280
75D	Big Maximum Sum data structures, dp, greedy, implementation, math, trees	2000	x1833
75C	Modified GCD binary search, number theory	1600	x12903
74E	Shift It! constructive algorithms	2800	x155
74D	Hanger data structures	2400	x370
74C	Chessboard Billiard dfs and similar, dsu, graphs, number theory	2100	x1290
73F	Plane of Tanks brute force, geometry	2900	x81
73E	Morrowindows math, number theory	2400	x361
73D	FreeDiv dfs and similar, graphs, greedy	2200	x643
73C	LionAge II dp	1800	x2126
73B	Need For Brake binary search, greedy, sortings	2000	x507
73A	The Elder Trolls IV: Oblivon greedy, math	1600	x1361
72H	Reverse It! *special problem, implementation	1600	x267
72F	Oil *special problem, greedy, math	1900	x120
72E	Ali goes shopping *special problem, brute force, strings	1800	x173
72D	Perse-script *special problem, expression parsing	2300	x75
72B	INI-file *special problem, implementation	2200	x78
72A	Goshtasp, Vishtasp and Eidi *special problem, greedy, math	1800	x187
71E	Nuclear Fusion bitmasks, dp	2200	x746
71D	Solitaire brute force, implementation	2200	x657
71C	Round Table Knights dp, math, number theory	1600	x6572
70E	Information Reform dp, implementation, trees	2700	x505
70D	Professor's task data structures, geometry	2700	x997
70C	Lucky Tickets binary search, data structures, sortings, two pointers	2200	x581
70B	Text Messaging expression parsing, greedy, strings	1600	x1781
69E	Subsegments data structures, implementation	1800	x4416
69D	Dot dp, games	1900	x1014
69C	Game implementation	2000	x593
68E	Contact geometry	2900	x72
68D	Half-decay tree data structures, divide and conquer, dp, math, probabilities	2500	x473
68C	Synchrophasotron brute force	2200	x311
68B	Energy exchange binary search	1600	x4667
67E	Save the City! geometry	2500	x318