Problemset - Codeforces

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

#	Name
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
85A	Domino constructive algorithms, implementation	1300	x1796
84C	Biathlon binary search, implementation	1700	x1713
84A	Toy Army math, number theory	900	x15184
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
83A	Magical Array math	1300	x6286
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
82A	Double Cola implementation, math	1100	x30407
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
81A	Plug-in implementation	1400	x11072
80B	Depression geometry, math	1200	x4450
80A	Panoramix's Prediction brute force	800	x54577
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
79B	Colorful Field implementation, sortings	1400	x7297
79A	Bus Game greedy	1200	x4098
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
78B	Easter Eggs constructive algorithms, implementation	1200	x13701
78A	Haiku implementation, strings	800	x12989
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
77A	Heroes brute force, implementation	1400	x1781
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	x752
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
75B	Facetook Priority Wall expression parsing, implementation, strings	1500	x3326
75A	Life Without Zeros implementation	1000	x26398
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
74B	Train dp, games, greedy	1500	x1550
74A	Room Leader implementation	1000	x5204
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	x1360
72I	Goofy Numbers *special problem, implementation	1500	x465
72H	Reverse It! *special problem, implementation	1600	x267
72G	Fibonacci army *special problem, dp	1000	x2317
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
72C	Extraordinarily Nice Numbers *special problem, math	1200	x923
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
71B	Progress Bar implementation, math	1300	x4561
71A	Way Too Long Words strings	800	x392911
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
70A	Cookies math	1300	x3296
69E	Subsegments data structures, implementation	1800	x4416
69D	Dot dp, games	1900	x1014
69C	Game implementation	2000	x593
69B	Bets greedy, implementation	1200	x3286
69A	Young Physicist implementation, math	1000	x168266
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
68A	Irrational problem implementation, number theory	1100	x4962
67E	Save the City! geometry	2500	x318
67D	Optical Experiment binary search, data structures, dp	1900	x1456
67C	Sequence of Balls dp	2600	x689
67B	Restoration of the Permutation greedy	1800	x779
67A	Partial Teacher dp, graphs, greedy, implementation	1800	x2123
66E	Petya and Post data structures, dp	2000	x760
66D	Petya and His Friends constructive algorithms, math, number theory	1700	x3189
66C	Petya and File System data structures, implementation	1800	x1081