Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round 945 (Div. 2)
3 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
82B	Sets constructive algorithms, hashing, implementation	1700	x2017
82A	Double Cola implementation, math	1100	x29462
81E	Pairs dfs and similar, dp, dsu, graphs, implementation, trees	2700	x327
81D	Polycarp's Picture Gallery constructive algorithms, greedy	2100	x631
81C	Average Score greedy, math, sortings	1700	x1625
81B	Sequence Formatting implementation, strings	1700	x1875
81A	Plug-in implementation	1400	x10196
80B	Depression geometry, math	1200	x4222
80A	Panoramix's Prediction brute force	800	x49727
79E	Security System math	2900	x118
79D	Password bitmasks, dp, shortest paths	2800	x944
79C	Beaver data structures, dp, greedy, hashing, strings, two pointers	1800	x1721
79B	Colorful Field implementation, sortings	1400	x6817
79A	Bus Game greedy	1200	x3977
78E	Evacuation flows, graphs, shortest paths	2300	x528
78D	Archer's Shot binary search, geometry, math, two pointers	2300	x302
78C	Beaver Game dp, games, number theory	2000	x1804
78B	Easter Eggs constructive algorithms, implementation	1200	x12759
78A	Haiku implementation, strings	800	x11973
77E	Martian Food geometry	2800	x363
77D	Domino Carpet dp, implementation	2300	x309
77C	Beavermuncher-0xFF dfs and similar, dp, dsu, greedy, trees	2100	x977
77B	Falling Anvils math, probabilities	1800	x2546
77A	Heroes brute force, implementation	1400	x1746
76F	Tourist binary search, data structures, dp	2300	x606
76E	Points implementation, math	1700	x1659
76D	Plus and xor dp, greedy, math	1700	x2001
76C	Mutation bitmasks, dp, math	2700	x269
76B	Mice greedy, two pointers	2100	x495
76A	Gift dsu, graphs, sortings, trees	2200	x1452
75E	Ship's Shortest Path geometry, shortest paths	2400	x270
75D	Big Maximum Sum data structures, dp, greedy, implementation, math, trees	2000	x1738
75C	Modified GCD binary search, number theory	1600	x12015
75B	Facetook Priority Wall expression parsing, implementation, strings	1500	x3218
75A	Life Without Zeros implementation	1000	x25032
74E	Shift It! constructive algorithms	2800	x142
74D	Hanger data structures	2400	x359
74C	Chessboard Billiard dfs and similar, dsu, graphs, number theory	2100	x949
74B	Train dp, games, greedy	1500	x1492
74A	Room Leader implementation	1000	x4939
73F	Plane of Tanks brute force, geometry	2900	x74
73E	Morrowindows math, number theory	2400	x322
73D	FreeDiv dfs and similar, graphs, greedy	2200	x612
73C	LionAge II dp	1800	x2054
73B	Need For Brake binary search, greedy, sortings	2000	x488
73A	The Elder Trolls IV: Oblivon greedy, math	1600	x1297
72I	Goofy Numbers *special problem, implementation	1500	x455
72H	Reverse It! *special problem, implementation	1600	x258
72G	Fibonacci army *special problem, dp	1000	x2052
72F	Oil *special problem, greedy, math	1900	x116
72E	Ali goes shopping *special problem, brute force, strings	1800	x150
72D	Perse-script *special problem, expression parsing	2300	x72
72C	Extraordinarily Nice Numbers *special problem, math	1200	x902
72B	INI-file *special problem, implementation	2200	x75
72A	Goshtasp, Vishtasp and Eidi *special problem, greedy, math	1800	x181
71E	Nuclear Fusion bitmasks, dp	2200	x670
71D	Solitaire brute force, implementation	2200	x600
71C	Round Table Knights dp, math, number theory	1600	x6235
71B	Progress Bar implementation, math	1300	x4364
71A	Way Too Long Words strings	800	x354782
70E	Information Reform dp, implementation, trees	2700	x478
70D	Professor's task data structures, geometry	2700	x954
70C	Lucky Tickets binary search, data structures, sortings, two pointers	2200	x561
70B	Text Messaging expression parsing, greedy, strings	1600	x1717
70A	Cookies math	1300	x3220
69E	Subsegments data structures, implementation	1800	x4034
69D	Dot dp, games	1900	x933
69C	Game implementation	2000	x558
69B	Bets greedy, implementation	1200	x3191
69A	Young Physicist implementation, math	1000	x155458
68E	Contact geometry	2900	x70
68D	Half-decay tree data structures, divide and conquer, dp, math, probabilities	2500	x448
68C	Synchrophasotron brute force	2200	x303
68B	Energy exchange binary search	1600	x4141
68A	Irrational problem implementation, number theory	1100	x4817
67E	Save the City! geometry	2500	x312
67D	Optical Experiment binary search, data structures, dp	1900	x1341
67C	Sequence of Balls dp	2600	x628
67B	Restoration of the Permutation greedy	1800	x755
67A	Partial Teacher dp, graphs, greedy, implementation	1800	x2056
66E	Petya and Post data structures, dp	2000	x684
66D	Petya and His Friends constructive algorithms, math, number theory	1700	x3054
66C	Petya and File System data structures, implementation	1800	x997
66B	Petya and Countryside brute force, implementation	1100	x19531
66A	Petya and Java implementation, strings	1300	x6219
65E	Harry Potter and Moving Staircases dfs and similar, implementation	2900	x84
65D	Harry Potter and the Sorting Hat brute force, dfs and similar, hashing	2200	x420
65C	Harry Potter and the Golden Snitch binary search, geometry	2100	x772
65B	Harry Potter and the History of Magic brute force, greedy, implementation	1700	x1320
65A	Harry Potter and Three Spells implementation, math	1800	x1783
64I	Sort the Table *special problem, sortings	2400	x84
64H	Table Bowling *special problem, sortings	2300	x109
64G	Path Canonization *special problem	2200	x116
64F	Domain *special problem, expression parsing	2000	x175
64E	Prime Segment *special problem, brute force, math, number theory	1800	x234
64D	Presents *special problem, greedy	1800	x281
64C	Table *special problem, greedy, implementation, math	1600	x331
64B	Expression *special problem, expression parsing	1500	x997
64A	Factorial *special problem, implementation	1300	x2706
63E	Sweets Game bitmasks, dfs and similar, dp, games, implementation	2000	x715