Problemset - Codeforces

→ Pay attention

Before contest
Rayan Programming Contest 2024 - Selection (Codeforces Round, Div. 1 + Div. 2)
5 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
706C	Hard problem dp, strings	1600	x16448
706B	Interesting drink binary search, dp, implementation	1100	x64584
706A	Beru-taxi brute force, geometry, implementation	900	x14532
705B	Spider Man games, math	1100	x9178
705A	Hulk implementation	800	x108513
704E	Iron Man data structures, geometry, trees	3300	x283
704D	Captain America flows, greedy	3100	x794
704C	Black Widow dp, graphs, implementation, math	2900	x464
704B	Ant Man dp, graphs, greedy	2500	x1888
704A	Thor brute force, data structures, implementation	1600	x9346
703E	Mishka and Divisors dp, number theory	2600	x601
703D	Mishka and Interesting sum data structures	2100	x3637
703C	Chris and Road geometry, implementation	2100	x1862
703B	Mishka and trip implementation, math	1400	x5688
703A	Mishka and Game implementation	800	x57301
702F	T-Shirts data structures	2800	x1426
702E	Analysis of Pathes in Functional Graph data structures, graphs	2100	x2617
702D	Road to Post Office math	1900	x3376
702C	Cellular Network binary search, implementation, two pointers	1500	x15373
702B	Powers of Two brute force, data structures, implementation, math	1500	x11996
702A	Maximum Increase dp, greedy, implementation	800	x45610
701C	They Are Everywhere binary search, strings, two pointers	1500	x15354
701B	Cells Not Under Attack data structures, math	1200	x11801
701A	Cards greedy, implementation	800	x19692
700E	Cool Slogans string suffix structures, strings	3300	x1189
700D	Huffman Coding on Segment data structures, greedy	3100	x462
700C	Break Up dfs and similar, graphs	2600	x1308
700B	Connecting Universities dfs and similar, dp, graphs, trees	1800	x4047
700A	As Fast As Possible binary search, math	1900	x3200
699B	One Bomb implementation	1400	x7614
699A	Launch of Collider implementation	1000	x16045
698F	Coprime Permutation combinatorics, number theory	3000	x438
698E	Cron	2800	x118
698D	Limak and Shooting Points brute force, geometry, math	2600	x542
698C	LRU bitmasks, dp, math, probabilities	2400	x1333
698B	Fix a Tree constructive algorithms, dfs and similar, dsu, graphs, trees	1700	x5761
698A	Vacations dp	1400	x30810
697B	Barnicle brute force, implementation, math, strings	1400	x5760
697A	Pineapple Incident implementation, math	900	x12829
696F	...Dary! binary search, geometry, two pointers	3300	x124
696E	...Wait for it... data structures, dsu, trees	3000	x559
696D	Legen... data structures, dp, matrices, strings	2500	x1313
696C	PLEASE combinatorics, dp, implementation, math, matrices	2000	x2087
696B	Puzzles dfs and similar, math, probabilities, trees	1700	x3526
696A	Lorenzo Von Matterhorn brute force, data structures, implementation, trees	1500	x6124
691F	Couple Cover brute force, dp, number theory	2200	x1308
691E	Xor-sequences matrices	1900	x2560
691D	Swaps in Permutation dfs and similar, dsu, math	1700	x5559
691C	Exponential notation implementation, strings	1800	x2615
691B	s-palindrome implementation, strings	1600	x7446
691A	Fashion in Berland implementation	1000	x10234
690F3	Tree of Life (hard) trees	3200	x53
690F2	Tree of Life (medium) constructive algorithms, hashing, trees	2700	x84
690F1	Tree of Life (easy)	1300	x2173
690E2	Photographs (II)	2600	x142
690E1	Photographs (I)	1800	x677
690D3	The Wall (hard) dp	2100	x523
690D2	The Wall (medium) combinatorics	1800	x1249
690D1	The Wall (easy)	1200	x2624
690C3	Brain Network (hard) trees	2200	x912
690C2	Brain Network (medium) dfs and similar, graphs, trees	1500	x3823
690C1	Brain Network (easy)	1300	x2783
690B3	Recover Polygon (hard) data structures	2600	x93
690B2	Recover Polygon (medium) geometry	2600	x204
690B1	Recover Polygon (easy)	1700	x941
690A3	Collective Mindsets (hard)	2400	x552
690A2	Collective Mindsets (medium)	2300	x710
690A1	Collective Mindsets (easy)	1100	x2879
689E	Mike and Geometry Problem combinatorics, data structures, dp, geometry, implementation	2000	x1943
689D	Friends and Subsequences binary search, data structures	2100	x3490
689C	Mike and Chocolate Thieves binary search, combinatorics, math	1700	x5395
689B	Mike and Shortcuts dfs and similar, graphs, greedy, shortest paths	1600	x6022
689A	Mike and Cellphone brute force, constructive algorithms, implementation	1400	x5274
688B	Lovely Palindromes constructive algorithms, math	1000	x32444
688A	Opponents implementation	800	x14027
687E	TOF dfs and similar, graphs	2900	x322
687D	Dividing Kingdom II brute force, data structures, dsu, graphs, sortings	2500	x963
687C	The Values You Can Make dp	1900	x5652
687B	Remainders Game chinese remainder theorem, math, number theory	1800	x5952
687A	NP-Hard Problem dfs and similar, graphs	1500	x14474
686B	Little Robber Girl's Zoo constructive algorithms, implementation, sortings	1100	x7807
686A	Free Ice Cream constructive algorithms, implementation	800	x38000
685E	Travelling Through the Snow Queen's Kingdom bitmasks, brute force, divide and conquer, graphs	2800	x557
685D	Kay and Eternity brute force, implementation, sortings	2600	x485
685C	Optimal Point binary search, math	2900	x585
685B	Kay and Snowflake data structures, dfs and similar, dp, trees	1900	x4172
685A	Robbers' watch brute force, combinatorics, dp, math	1700	x4282
683J	The Hero with Bombs *special problem	3000	x40
683I	Loader *special problem, graphs	2500	x38
683H	Exchange of Books *special problem	1900	x95
683G	The Fraction *special problem	1900	x130
683F	Reformat the String *special problem	1800	x146
683E	Hammer throwing *special problem	1800	x188
683D	Chocolate Bar *special problem, math	1400	x323
683C	Symmetric Difference *special problem	1600	x322
683B	The Teacher of Physical Education *special problem	1600	x317
683A	The Check of the Point *special problem, geometry	1200	x799
682E	Alyona and Triangles geometry, two pointers	2600	x669
682D	Alyona and Strings dp, strings	1900	x3337
682C	Alyona and the Tree dfs and similar, dp, graphs, trees	1600	x7289