Problemset - Codeforces

→ Pay attention

Before contest
Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)
3 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1625B	Elementary Particles brute force, greedy, sortings	1100	x16134
1624C	Division by Two and Permutation constructive algorithms, flows, graph matchings, greedy, math	1100	x25012
1623B	Game on Ranges brute force, dfs and similar, implementation, sortings	1100	x14128
1619C	Wrong Addition implementation	1200	x21148
1618D	Array and Operations dp, greedy, math	1300	x19100
1618C	Paint the Array math	1100	x23464
1617C	Paprika and Permutation binary search, greedy, math, sortings	1300	x15078
1616B	Mirror in the String greedy, strings	1100	x19767
1615B	And It's Non-Zero bitmasks, greedy, math	1300	x16122
1613C	Poisoned Dagger binary search	1200	x24924
1612C	Chat Ban binary search, math	1300	x17866
1610B	Kalindrome Array greedy, two pointers	1100	x16216
1609B	William the Vigilant implementation, strings	1100	x11731
1608B	Build the Permutation constructive algorithms, greedy	1200	x11787
1607D	Blue-Red Permutation greedy, math, sortings	1300	x16986
1606B	Update Files greedy, implementation, math	1100	x18730
1604B	XOR Specia-LIS-t	1100	x15745
1603A	Di-visible Confusion constructive algorithms, math, number theory	1300	x16775
1602B	Divine Array constructive algorithms, implementation	1100	x14163
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x14880
1598C	Delete Two Elements data structures, dp, implementation, math, two pointers	1200	x21129
1594E1	Rubik's Cube Coloring (easy version) combinatorics, math	1300	x11250
1594C	Make Them Equal brute force, greedy, math, strings	1200	x19894
1594B	Special Numbers bitmasks, math	1100	x20094
1593D1	All are Same math, number theory	1100	x20331
1592B	Hemose Shopping constructive algorithms, dsu, math, sortings	1200	x16082
1585C	Minimize Distance greedy	1300	x12132
1583B	Omkar and Heavenly Tree constructive algorithms, trees	1200	x12364
1582C	Grandma Capa Knits a Scarf brute force, data structures, greedy, strings, two pointers	1200	x15987
1581B	Diameter of Graph constructive algorithms, graphs, greedy, math	1200	x11492
1579B	Shifting Sort implementation, sortings	1100	x18217
1578E	Easy Scheduling implementation, math	1200	x3850
1575A	Another Sorting Problem data structures, sortings, strings	1100	x4647
1574C	Slay the Dragon binary search, greedy, sortings, ternary search	1300	x17271
1574B	Combinatorics Homework combinatorics, greedy, math	1100	x17384
1571B	Epic Novel *special problem, math	1300	x721
1566D1	Seating Arrangements (easy version) data structures, greedy, sortings	1100	x14063
1561C	Deep Down Below binary search, greedy, sortings	1300	x14985
1560D	Make a Power of Two greedy, math, strings	1300	x18292
1559C	Mocha and Hiking constructive algorithms, graphs	1200	x20662
1558A	Charmed by the Game brute force, math	1300	x11128
1557B	Moamen and k-subarrays greedy, sortings	1100	x23557
1556B	Take Your Places! implementation	1300	x12747
1555C	Coin Rows brute force, constructive algorithms, dp, implementation	1300	x21985
1555B	Two Tables brute force	1300	x16165
1553C	Penalty bitmasks, brute force, dp, greedy	1200	x18030
1553B	Reverse String brute force, dp, hashing, implementation, strings	1300	x14234
1547D	Co-growing Sequence bitmasks, constructive algorithms, greedy	1300	x16832
1547C	Pair Programming greedy, two pointers	1100	x22823
1546B	AquaMoon and Stolen String interactive, math	1200	x13207
1541B	Pleasant Pairs brute force, implementation, math, number theory	1200	x29049
1539C	Stable Groups greedy, sortings	1200	x23323
1538C	Number of Pairs binary search, data structures, math, two pointers	1300	x29001
1537C	Challenging Cliffs constructive algorithms, greedy, implementation, math	1200	x27905
1536B	Prinzessin der Verurteilung brute force, constructive algorithms, strings	1200	x19052
1534C	Little Alawn's Puzzle combinatorics, dp, dsu, graphs, math	1300	x12894
1534B	Histogram Ugliness greedy, implementation, math	1100	x12534
1530C	Pursuit binary search, brute force, greedy, sortings	1200	x14720
1529B	Sifid and Strange Subsequences greedy, math, sortings	1100	x20629
1527B1	Palindrome Game (easy version) constructive algorithms, games	1200	x26512
1523B	Lord of the Values constructive algorithms	1100	x12120
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x21494
1520D	Same Differences data structures, hashing, math	1200	x48052
1517B	Morning Jogging constructive algorithms, greedy, sortings	1200	x13287
1514B	AND 0, Sum Big bitmasks, combinatorics, math	1200	x25499
1512D	Corrupted Array constructive algorithms, data structures, greedy	1200	x22744
1512C	A-B Palindrome constructive algorithms, implementation, strings	1200	x20346
1511C	Yet Another Card Deck brute force, data structures, implementation, trees	1100	x24275
1511B	GCD Length constructive algorithms, math, number theory	1100	x23037
1510K	King's Task brute force, graphs, implementation	1200	x5520
1509B	TMT Document greedy	1100	x21702
1506B	Partial Replacement greedy, implementation	1100	x20293
1504B	Flip the Bits constructive algorithms, greedy, implementation, math	1200	x18840
1498B	Box Fitting binary search, bitmasks, data structures, greedy	1300	x17449
1497C1	k-LCM (easy version) constructive algorithms, math	1200	x26104
1497B	M-arrays constructive algorithms, greedy, math	1200	x20264
1496B	Max and Mex math	1100	x17608
1495A	Diamond Miner geometry, greedy, math, sortings	1200	x17162
1493B	Planet Lapituletti brute force, implementation	1300	x11886
1492B	Card Deck data structures, greedy, math	1100	x18528
1491B	Minimal Cost brute force, math	1200	x13847
1490D	Permutation Transformation dfs and similar, divide and conquer, implementation	1200	x19667
1490C	Sum of Cubes binary search, brute force, brute force, math	1100	x33747
1487B	Cat Cycle math, number theory	1200	x21413
1485B	Replace and Keep Sorted dp, implementation, math	1200	x17154
1481B	New Colony brute force, greedy, implementation	1100	x19335
1478B	Nezzar and Lucky Number brute force, dp, greedy, math	1100	x18366
1476B	Inflation binary search, brute force, greedy, math	1300	x20139
1472D	Even-Odd Game dp, games, greedy, sortings	1200	x27745
1472C	Long Jumps dp, graphs	1100	x31692
1471B	Strange List brute force, greedy, implementation, math	1100	x19403
1470A	Strange Birthday Party binary search, dp, greedy, sortings, two pointers	1300	x22779
1466C	Canine poetry dp, greedy, strings	1300	x17748
1463A	Dungeon binary search, math	1100	x25763
1459B	Move and Turn dp, math	1300	x15055
1455C	Ping-pong constructive algorithms, games, math	1100	x19670
1455B	Jumps constructive algorithms, math	1200	x22018
1454D	Number into Sequence constructive algorithms, math, number theory	1300	x20623
1454C	Sequence Transformation greedy, implementation	1200	x21563
1446A	Knapsack constructive algorithms, greedy, sortings	1300	x15683