Problemset - Codeforces

→ Pay attention

Before contest
European Championship 2025 - Online Mirror (Unrated, ICPC Rules, Teams Preferred)
26:06:33
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1722A	Spell Check implementation	800	x54623
1721A	Image greedy, implementation	800	x27334
1720B	Interesting Sum brute force, data structures, greedy, math, sortings	800	x21521
1720A	Burenka Plays with Fractions math, number theory	900	x22893
1719B	Mathematical Circus constructive algorithms, math	800	x18675
1719A	Chip Game games, math	800	x25900
1717A	Madoka and Strange Thoughts math, number theory	800	x19798
1716B	Permutation Chain constructive algorithms, math	800	x21576
1716A	2-3 Moves greedy, math	800	x33672
1715A	Crossmarket constructive algorithms, greedy, math	800	x23756
1714C	Minimum Varied Number greedy	800	x31662
1714B	Remove Prefix data structures, greedy, implementation	800	x31113
1714A	Everyone Loves to Sleep implementation, math	900	x30598
1713A	Traveling Salesman Problem geometry, greedy, implementation	800	x22208
1712B	Woeful Permutation constructive algorithms, greedy, number theory	800	x21844
1712A	Wonderful Permutation greedy, implementation	800	x24349
1711A	Perfect Permutation constructive algorithms	800	x25497
1709B	Also Try Minecraft data structures, dp, implementation	900	x23730
1709A	Three Doors brute force, greedy, implementation, math	800	x30162
1708A	Difference Operations greedy, math	800	x21988
1706A	Another String Minimization Problem 2-sat, constructive algorithms, greedy, string suffix structures, strings	800	x23265
1705B	Mark the Dust Sweeper constructive algorithms, greedy, implementation	900	x23649
1705A	Mark the Photographer greedy, sortings	800	x25851
1704A	Two 0-1 Sequences constructive algorithms, greedy	800	x16212
1703C	Cypher brute force, implementation, strings	800	x37129
1703B	ICPC Balloons data structures, implementation	800	x53670
1703A	YES or YES? brute force, implementation, strings	800	x76851
1702B	Polycarp Writes a String from Memory greedy	800	x28049
1702A	Round Down the Price constructive algorithms	800	x35745
1701B	Permutation greedy	800	x20362
1701A	Grass Field implementation	800	x26651
1700A	Optimal Path constructive algorithms, greedy, math	800	x23183
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x20203
1699A	The Third Three Number Problem constructive algorithms, math	800	x24235
1698B	Rising Sand constructive algorithms, greedy, implementation	800	x21086
1698A	XOR Mixup bitmasks, brute force	800	x30098
1697B	Promo greedy, sortings	900	x27683
1697A	Parkway Walk greedy, implementation	800	x26063
1696B	NIT Destroys the Universe greedy	900	x23736
1696A	NIT orz! bitmasks, greedy	800	x19114
1695A	Subrectangle Guess games	800	x16476
1694A	Creep greedy, implementation	800	x22970
1692C	Where's the Bishop? implementation	800	x35811
1692B	All Distinct greedy, sortings	800	x35646
1692A	Marathon implementation	800	x70576
1691A	Beat The Odds brute force, greedy, math	800	x31033
1690C	Restoring the Duration of Tasks data structures, greedy, implementation	800	x26706
1690B	Array Decrements greedy, implementation	800	x25982
1690A	Print a Pedestal (Codeforces logo?) constructive algorithms, greedy	800	x34221
1689B	Mystic Permutation data structures, greedy	900	x17947
1689A	Lex String brute force, greedy, implementation, sortings, two pointers	800	x16936
1688B	Patchouli's Magical Talisman bitmasks, constructive algorithms, greedy, sortings	800	x18492
1688A	Cirno's Perfect Bitmasks Classroom bitmasks, brute force	800	x22110
1686B	Odd Subarrays dp, greedy	800	x18553
1686A	Everything Everywhere All But One greedy	800	x20656
1684B	Z mod X = C constructive algorithms, math	800	x21216
1684A	Digit Minimization constructive algorithms, games, math, strings	800	x24176
1682A	Palindromic Indices greedy, strings	800	x19479
1681B	Card Trick implementation, math	800	x20320
1681A	Game with Cards games, greedy	800	x21167
1680B	Robots implementation	800	x18604
1680A	Minimums and Maximums brute force, math	800	x21796
1679A	AvtoBus brute force, greedy, math, number theory	900	x26816
1678B1	Tokitsukaze and Good 01-String (easy version) implementation	800	x16098
1678A	Tokitsukaze and All Zero Sequence implementation	800	x18411
1676C	Most Similar Words brute force, greedy, implementation, implementation, math, strings	800	x31363
1676B	Equal Candies greedy, math, sortings	800	x51907
1676A	Lucky? implementation	800	x70047
1675B	Make It Increasing greedy, implementation	900	x29827
1675A	Food for Animals greedy, math	800	x34079
1674B	Dictionary combinatorics, math	800	x26934
1674A	Number Transformation constructive algorithms, math	800	x26829
1673A	Subtle Substring Subtraction games, greedy, strings	800	x18616
1672B	I love AAAB constructive algorithms, implementation	800	x16061
1672A	Log Chopping games, implementation, math	800	x16314
1671A	String Building implementation	800	x20706
1670A	Prof. Slim greedy, implementation, sortings	800	x15589
1669C	Odd/Even Increments greedy, greedy, implementation, math	800	x36835
1669B	Triple implementation, sortings	800	x46591
1669A	Division? implementation	800	x70004
1668B	Social Distance greedy, math, sortings	900	x17074
1668A	Direction Change implementation, math	800	x16455
1666D	Deletive Editing greedy	900	x10275
1665B	Array Cloning Technique constructive algorithms, greedy, sortings	900	x22444
1665A	GCD vs LCM constructive algorithms, math	800	x24228
1661A	Array Balancing greedy, math	800	x18581
1660B	Vlad and Candies math	800	x28507
1660A	Vasya and Coins greedy, math	800	x36906
1658B	Marin and Anti-coprime Permutation combinatorics, math, number theory	800	x18814
1658A	Marin and Photoshoot constructive algorithms, implementation, math	800	x20479
1657B	XY Sequence greedy	800	x23058
1657A	Integer Moves brute force, math	800	x24243
1656A	Good Pairs math, sortings	800	x19857
1654B	Prefix Removals strings	800	x15987
1654A	Maximum Cake Tastiness brute force, greedy, implementation, sortings	800	x18847
1651B	Prove Him Wrong constructive algorithms, greedy	800	x19827
1651A	Playoff implementation	800	x25975
1650B	DIV + MOD math	900	x28365
1650A	Deletions of Two Adjacent Letters implementation, strings	800	x35500
1649A	Game implementation	800	x15686