Problemset - Codeforces

→ Pay attention

Before contest
CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
28:03:56
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
105B	Dark Assembly brute force, probabilities	1800	x819
105A	Transmigration implementation	1700	x1844
104A	Blackjack implementation	800	x15475
103E	Buying Sets flows, graph matchings	2900	x882
103D	Time to Raid Cowavans brute force, data structures, sortings	2100	x2131
103C	Russian Roulette constructive algorithms, greedy	1900	x960
103B	Cthulhu dfs and similar, dsu, graphs	1500	x8983
103A	Testing Pants for Sadness greedy, implementation, math	1100	x6012
102B	Sum of Digits implementation	1000	x27123
102A	Clothes brute force	1200	x3029
101E	Candies and Stones divide and conquer, dp	2500	x517
101D	Castle dp, greedy, probabilities, sortings, trees	2300	x689
101C	Vectors implementation, math	2000	x703
101B	Buses binary search, data structures, dp	1700	x2638
101A	Homework greedy	1200	x3870
100J	Interval Coloring *special problem, greedy, math	2400	x62
100I	Rotation *special problem, geometry, math	1500	x351
100H	Battleship *special problem, dfs and similar, implementation	2100	x79
100G	Name the album *special problem, data structures, implementation	1800	x124
100F	Polynom *special problem, implementation	1800	x135
100E	Lamps in a Line *special problem, math	1600	x273
100D	World of Mouth *special problem, strings	1500	x306
100C	A+B *special problem, implementation	1400	x537
100B	Friendly Numbers *special problem, implementation	1500	x546
100A	Carpeting the Room *special problem, implementation	1100	x930
99B	Help Chef Gerasim implementation, sortings	1300	x2995
99A	Help Far Away Kingdom strings	800	x6723
98E	Help Shrek and Donkey dp, games, math, probabilities	2700	x479
98D	Help Monks constructive algorithms	2500	x185
98C	Help Greg the Dwarf geometry, ternary search	2500	x310
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
96B	Lucky Numbers (easy) binary search, bitmasks, brute force	1300	x15682
96A	Football implementation, strings	900	x160848
95E	Lucky Country dp, dsu, graphs	2500	x1515
95D	Horse Races dp, math	2500	x428
95C	Volleyball shortest paths	1900	x2808
95B	Lucky Numbers dp, greedy	1800	x1225
95A	Hockey implementation, strings	1600	x1681
94B	Friends graphs, implementation, math	1300	x4703
94A	Restoring Password implementation, strings	900	x10633
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	x1965
92B	Binary Number greedy	1300	x4878
92A	Chips implementation, math	800	x18961
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
91B	Queue binary search, data structures	1500	x6862
91A	Newspaper Headline greedy, strings	1500	x3608
90B	African Crossword implementation, strings	1100	x5348
90A	Cableway greedy, math	1000	x4711
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	x525
89A	Robbery greedy	1800	x1483
88B	Keyboard implementation	1500	x4718
88A	Chord brute force, implementation	1200	x3837
87E	Mogohu-Rea Idol geometry	2600	x603
87D	Beautiful Road dfs and similar, dp, dsu, graphs, implementation, sortings, trees	2300	x909
87C	Interesting Game dp, games, math	2000	x1386
87B	Vasya and Types implementation, strings	1800	x1155
87A	Trains implementation, math	1500	x5409
86E	Long sequence brute force, math, matrices	2700	x189
86D	Powerful array data structures, implementation, math, two pointers	2200	x13934
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	x959
85D	Sum of Medians binary search, brute force, data structures, implementation	2300	x2058
85C	Petya and Tree binary search, dfs and similar, probabilities, sortings, trees	2200	x542
85B	Embassy Queue data structures, greedy	1800	x982
85A	Domino constructive algorithms, implementation	1300	x1795
84C	Biathlon binary search, implementation	1700	x1709
84A	Toy Army math, number theory	900	x15169
83E	Two Subsequences bitmasks, dp	2800	x480
83D	Numbers dp, math, number theory	2400	x890
83C	Track graphs, greedy, shortest paths	2400	x432
83B	Doctor binary search, math, sortings	1800	x1703
83A	Magical Array math	1300	x6277
82E	Corridor geometry	2600	x217
82D	Two out of Three dp	2000	x2044
82C	General Mobilization data structures, dfs and similar, sortings	2000	x810
82B	Sets constructive algorithms, hashing, implementation	1700	x2062
82A	Double Cola implementation, math	1100	x30394
81E	Pairs dfs and similar, dp, dsu, graphs, implementation, trees	2700	x350
81D	Polycarp's Picture Gallery constructive algorithms, greedy	2100	x651
81C	Average Score greedy, math, sortings	1700	x1671
81B	Sequence Formatting implementation, strings	1700	x1956
81A	Plug-in implementation	1400	x11053
80B	Depression geometry, math	1200	x4448