Problemset - Codeforces

→ Pay attention

Before contest
Codeforces Round sponsored by NEAR (Div. 1 + Div. 2)
2 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

constructive algorithms

Add tag

Problems

#	Name
1747B	BAN BAN constructive algorithms	900	x22492
1747A	Two Groups constructive algorithms, greedy	800	x24651
1746B	Rebellion constructive algorithms, greedy, two pointers	800	x16992
1746A	Maxmina constructive algorithms, greedy	800	x19710
1743C	Save the Magazines constructive algorithms, dp, greedy	1100	x18891
1743B	Permutation Value constructive algorithms, greedy	800	x22063
1741B	Funny Permutation constructive algorithms, math	800	x25098
1740A	Factorise N+M constructive algorithms, number theory	800	x19889
1739B	Array Recovery constructive algorithms, greedy, math	1100	x21958
1735A	Working Week constructive algorithms, greedy, math	800	x20047
1734B	Bright, Nice, Brilliant constructive algorithms	800	x15671
1733B	Rule of League constructive algorithms, math	900	x19481
1732A	Bestie brute force, combinatorics, constructive algorithms, implementation, math, number theory	1000	x14682
1729C	Jumping on Tiles constructive algorithms, strings	1100	x19687
1728B	Best Permutation constructive algorithms, greedy	800	x20023
1726B	Mainak and Interesting Sequence bitmasks, constructive algorithms, math	1100	x14902
1719B	Mathematical Circus constructive algorithms, math	800	x18388
1717B	Madoka and Underground Competitions constructive algorithms, implementation	1100	x14596
1716B	Permutation Chain constructive algorithms, math	800	x21306
1715B	Beautiful Array constructive algorithms, greedy, math	1000	x20890
1715A	Crossmarket constructive algorithms, greedy, math	800	x23344
1713B	Optimal Reduction constructive algorithms, sortings	1000	x20950
1712B	Woeful Permutation constructive algorithms, greedy, number theory	800	x21409
1711A	Perfect Permutation constructive algorithms	800	x24947
1708B	Difference of GCDs constructive algorithms, math	1100	x20076
1706A	Another String Minimization Problem 2-sat, constructive algorithms, greedy, string suffix structures, strings	800	x22708
1705B	Mark the Dust Sweeper constructive algorithms, greedy, implementation	900	x22454
1704A	Two 0-1 Sequences constructive algorithms, greedy	800	x15889
1702A	Round Down the Price constructive algorithms	800	x34091
1700B	Palindromic Numbers constructive algorithms, implementation, math	1100	x18492
1700A	Optimal Path constructive algorithms, greedy, math	800	x22702
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x19412
1699A	The Third Three Number Problem constructive algorithms, math	800	x23795
1698B	Rising Sand constructive algorithms, greedy, implementation	800	x20802
1691B	Shoe Shuffling constructive algorithms, greedy, implementation, two pointers	1000	x22076
1690A	Print a Pedestal (Codeforces logo?) constructive algorithms, greedy	800	x32955
1688B	Patchouli's Magical Talisman bitmasks, constructive algorithms, greedy, sortings	800	x18050
1685A	Circular Local MiniMax constructive algorithms, greedy, sortings	1100	x16747
1684B	Z mod X = C constructive algorithms, math	800	x20812
1684A	Digit Minimization constructive algorithms, games, math, strings	800	x23669
1682B	AND Sorting bitmasks, constructive algorithms, sortings	1100	x17885
1674A	Number Transformation constructive algorithms, math	800	x25978
1672C	Unequal Array constructive algorithms, greedy, implementation	1100	x13088
1672B	I love AAAB constructive algorithms, implementation	800	x15705
1665B	Array Cloning Technique constructive algorithms, greedy, sortings	900	x19429
1665A	GCD vs LCM constructive algorithms, math	800	x23222
1659A	Red Versus Blue constructive algorithms, greedy, implementation, math	1000	x17698
1658A	Marin and Photoshoot constructive algorithms, implementation, math	800	x20224
1651B	Prove Him Wrong constructive algorithms, greedy	800	x19447
1646B	Quality vs Quantity brute force, constructive algorithms, greedy, sortings, two pointers	800	x21010
1644B	Anti-Fibonacci Permutation brute force, constructive algorithms, implementation	800	x20578
1638A	Reverse constructive algorithms, greedy, math	800	x21356
1634C	OKEA constructive algorithms	1000	x18051
1632B	Roof Construction bitmasks, constructive algorithms	1000	x21567
1627A	Not Shading constructive algorithms, implementation	800	x23901
1626A	Equidistant Letters constructive algorithms, sortings	800	x28543
1624C	Division by Two and Permutation constructive algorithms, flows, graph matchings, greedy, math	1100	x24457
1621A	Stable Arrangement of Rooks constructive algorithms	800	x23661
1620A	Equal or Not Equal constructive algorithms, dsu, implementation	800	x21388
1617B	GCD Problem brute force, constructive algorithms, math, number theory	900	x22862
1617A	Forbidden Subsequence constructive algorithms, greedy, sortings, strings	800	x16183
1614B	Divan and a New Project constructive algorithms, sortings	1000	x18471
1614A	Divan and a Store brute force, constructive algorithms, greedy	800	x23145
1612B	Special Permutation constructive algorithms, greedy	900	x17024
1612A	Distance brute force, constructive algorithms	800	x17575
1611C	Polycarp Recovers the Permutation constructive algorithms	1000	x18159
1611B	Team Composition: Programmers and Mathematicians binary search, constructive algorithms, math	800	x29053
1611A	Make Even constructive algorithms, math	800	x31079
1608A	Find Array constructive algorithms, math	800	x18875
1602B	Divine Array constructive algorithms, implementation	1100	x13962
1579E1	Permutation Minimization by Deque constructive algorithms, greedy, math	1000	x21258
1574A	Regular Bracket Sequences constructive algorithms	800	x21582
1569B	Chess Tournament constructive algorithms	1000	x18708
1566C	MAX-MEX Cut bitmasks, constructive algorithms, dp, greedy	1000	x17273
1566B	MIN-MEX Cut bitmasks, constructive algorithms, dp, greedy	800	x19336
1562B	Scenes From a Memory brute force, constructive algorithms, implementation, math, number theory	1000	x19328
1559A	Mocha and Math bitmasks, constructive algorithms, math	900	x29942
1541A	Pretty Permutations constructive algorithms, greedy, implementation	800	x29189
1537B	Bad Boy constructive algorithms, greedy, math	900	x28845
1536A	Omkar and Bad Story brute force, constructive algorithms	800	x20126
1530B	Putting Plates constructive algorithms, implementation	800	x15727
1529A	Eshag Loves Big Arrays constructive algorithms, greedy, math	800	x29570
1526A	Mean Inequality constructive algorithms, sortings	800	x24017
1525B	Permutation Sort constructive algorithms, greedy	900	x24447
1523B	Lord of the Values constructive algorithms	1100	x12029
1521A	Nastia and Nearly Good Numbers constructive algorithms, math, number theory	1000	x36185
1520C	Not Adjacent Matrix constructive algorithms	1000	x31161
1515A	Phoenix and Gold constructive algorithms, greedy, math	800	x20119
1513A	Array and Peaks constructive algorithms, implementation	800	x19249
1511B	GCD Length constructive algorithms, math, number theory	1100	x22293
1509A	Average Height constructive algorithms	800	x25845
1504A	Déjà Vu constructive algorithms, strings	800	x21545
1499A	Domino on Windowsill combinatorics, constructive algorithms, math	800	x21083
1496A	Split it! brute force, constructive algorithms, greedy, strings	900	x20464
1493A	Anti-knapsack constructive algorithms, greedy	800	x19176
1490B	Balanced Remainders brute force, constructive algorithms, math	1000	x25891
1476A	K-divisible Sum binary search, constructive algorithms, greedy, math	1000	x36017
1474B	Different Divisors binary search, constructive algorithms, greedy, math, number theory	1000	x27468
1469A	Regular Bracket Sequence constructive algorithms, greedy	1000	x26917
1467A	Wizard of Orz constructive algorithms, greedy, math	900	x24082