Problemset - Codeforces

Please read the new rule regarding the restriction on the use of AI tools. ×

→ Pay attention

Before contest
Kotlin Heroes: Episode 11
13:12:04
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
725B	Food on the Plane implementation, math	1200	x5134
724B	Batch Sort brute force, greedy, implementation, math	1500	x4012
723B	Text Document Analysis expression parsing, implementation, strings	1100	x10179
722B	Verse Pattern implementation, strings	1200	x6466
722A	Broken Clock brute force, implementation	1300	x6634
721B	Passwords implementation, math, sortings, strings	1100	x12079
719B	Anatoly and Cockroaches greedy	1400	x8479
719A	Vitya in the Countryside implementation	1100	x15535
717C	Potions Homework implementation, sortings	1200	x3936
716B	Complete the Word greedy, two pointers	1300	x12133
714B	Filya and Homework implementation, sortings	1200	x14465
714A	Meeting of Old Friends implementation, math	1100	x10776
713A	Sonya and Queries data structures, implementation	1400	x8461
712B	Memory and Trident implementation, strings	1100	x9751
711B	Chris and Magic Square constructive algorithms, implementation	1400	x8416
710C	Magic Odd Square constructive algorithms, math	1500	x5096
710B	Optimal Point on a Line brute force, sortings	1400	x8743
709B	Checkpoints greedy, implementation, sortings	1500	x4731
708A	Letters Cyclic Shift constructive algorithms, greedy, implementation, strings	1200	x8988
707C	Pythagorean Triples math, number theory	1500	x12612
707B	Bakery graphs	1300	x12918
706B	Interesting drink binary search, dp, implementation	1100	x62637
705B	Spider Man games, math	1100	x9122
703B	Mishka and trip implementation, math	1400	x5673
702C	Cellular Network binary search, implementation, two pointers	1500	x14772
702B	Powers of Two brute force, data structures, implementation, math	1500	x11784
701C	They Are Everywhere binary search, strings, two pointers	1500	x14978
701B	Cells Not Under Attack data structures, math	1200	x11725
699B	One Bomb implementation	1400	x7587
698A	Vacations dp	1400	x30105
697B	Barnicle brute force, implementation, math, strings	1400	x5708
696A	Lorenzo Von Matterhorn brute force, data structures, implementation, trees	1500	x6061
690F1	Tree of Life (easy)	1300	x2158
690D1	The Wall (easy)	1200	x2613
690C2	Brain Network (medium) dfs and similar, graphs, trees	1500	x3715
690C1	Brain Network (easy)	1300	x2754
690A1	Collective Mindsets (easy)	1100	x2818
689A	Mike and Cellphone brute force, constructive algorithms, implementation	1400	x5255
687A	NP-Hard Problem dfs and similar, graphs	1500	x14310
686B	Little Robber Girl's Zoo constructive algorithms, implementation, sortings	1100	x7782
683D	Chocolate Bar *special problem, math	1400	x322
683A	The Check of the Point *special problem, geometry	1200	x787
682B	Alyona and Mex sortings	1200	x11365
682A	Alyona and Numbers constructive algorithms, math, number theory	1100	x21616
681B	Economy Game brute force	1300	x8918
679A	Bear and Prime 100 constructive algorithms, interactive, math	1400	x12969
677C	Vanya and Label bitmasks, combinatorics, implementation, strings	1500	x6405
677B	Vanya and Food Processor implementation, math	1400	x7634
676C	Vasya and String binary search, dp, strings, two pointers	1500	x18800
676B	Pyramid of Glasses implementation, math, math	1500	x5495
675B	Restoring Painting brute force, constructive algorithms, math	1400	x7378
675A	Infinite Sequence math	1100	x14929
673B	Problems for Round greedy, implementation	1300	x3521
670D2	Magic Powder - 2 binary search, implementation	1500	x14252
670D1	Magic Powder - 1 binary search, brute force, implementation	1400	x17684
670C	Cinema implementation, sortings	1300	x9117
667B	Coat of Anticubism constructive algorithms, geometry	1100	x5616
667A	Pouring Rain geometry, math	1100	x8015
665C	Simple Strings dp, greedy, strings	1300	x10264
665B	Shopping brute force	1400	x3541
661A	Lazy Caterer Sequence *special problem	1300	x637
660A	Co-prime Array greedy, implementation, math, number theory	1200	x8869
659D	Bicycle Race geometry, implementation, math	1500	x6310
659C	Tanya and Toys greedy, implementation	1200	x11471
659B	Qualifying Contest constructive algorithms, sortings	1300	x6263
653B	Bear and Compressing brute force, dfs and similar, dp, strings	1300	x4965
652A	Gabriel and Caterpillar implementation, math	1400	x4622
651B	Beautiful Paintings greedy, sortings	1200	x11538
651A	Joysticks dp, greedy, implementation, math	1100	x22908
650A	Watchmen data structures, geometry, math	1400	x15458
649C	Печать условий constructive algorithms, greedy, sortings	1500	x455
649B	Этажи constructive algorithms	1400	x535
648C	Путь Робота constructive algorithms, dfs and similar, graphs	1100	x943
645B	Mischievous Mess Makers greedy, math	1200	x3397
645A	Amity Assessment brute force, constructive algorithms, implementation	1200	x3445
643A	Bear and Colors implementation	1500	x4141
641B	Little Artem and Matrix implementation	1400	x3984
639A	Bear and Displayed Friends implementation	1200	x6148
638B	Making Genome in Berland *special problem, dfs and similar, strings	1500	x1965
638A	Home Numbers *special problem, constructive algorithms, math	1100	x3860
637C	Promocodes with Mistakes *special problem, brute force, constructive algorithms, implementation	1400	x2423
637B	Chat Order *special problem, binary search, constructive algorithms, data structures, sortings	1200	x16318
635A	Orchestra brute force, implementation	1100	x2887
634A	Island Puzzle constructive algorithms, implementation	1300	x3308
633B	A Trivial Problem brute force, constructive algorithms, math, number theory	1300	x6662
633A	Ebony and Ivory brute force, math, number theory	1100	x12681
632B	Alice, Bob, Two Teams brute force, constructive algorithms	1400	x3991
632A	Grandma Laura and Apples	1200	x4584
631B	Print Check constructive algorithms, implementation	1200	x7377
630R	Game games, math	1200	x8616
630N	Forecast math	1300	x4655
630L	Cracking the Code implementation, math	1400	x3560
630K	Indivisibility math, number theory	1500	x5251
630J	Divisibility math, number theory	1100	x11051
630H	Benches combinatorics, math	1400	x4942
630F	Selection of Personnel combinatorics, math	1300	x6799
630D	Hexagons! math	1100	x10832
630C	Lucky Numbers combinatorics, math	1100	x21821
630B	Moore's Law math	1200	x7374
629B	Far Relative’s Problem brute force	1100	x8041