Problemset - Codeforces

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

→ Pay attention

Before contest
Codeforces Round (Div. 2)
4 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
496E	Distributing Parts greedy, sortings	2100	x1656
496D	Tennis Game binary search	1900	x3015
496C	Removing Columns brute force, constructive algorithms, implementation	1500	x7735
496B	Secret Combination brute force, constructive algorithms, implementation	1500	x5880
496A	Minimum Difficulty brute force, implementation, math	900	x16391
495B	Modular Equations math, number theory	1600	x6916
495A	Digital Counter implementation	1100	x8461
494E	Sharti data structures, games	3200	x316
494D	Birthday data structures, dfs and similar, dp, trees	2700	x524
494C	Helping People dp, probabilities	2600	x858
494B	Obsessive String dp, strings	2000	x2698
494A	Treasure greedy	1500	x6228
493E	Vasya and Polynomial math	2800	x485
493D	Vasya and Chess constructive algorithms, games, math	1700	x9661
493C	Vasya and Basketball binary search, brute force, data structures, implementation, sortings, two pointers	1600	x6793
493B	Vasya and Wrestling implementation	1400	x13305
493A	Vasya and Football implementation	1300	x6108
492E	Vanya and Field math	2000	x1625
492D	Vanya and Computer Game binary search, implementation, math, sortings	1800	x3154
492C	Vanya and Exams greedy, sortings	1400	x14037
492B	Vanya and Lanterns binary search, implementation, math, sortings	1200	x75281
492A	Vanya and Cubes implementation	800	x49991
491C	Deciphering flows, graph matchings	2300	x410
491B	New York Hotel greedy, math	2100	x555
491A	Up the hill constructive algorithms, implementation	1000	x2916
490F	Treeland Tour data structures, dfs and similar, dp, trees	2200	x1681
490E	Restoring Increasing Sequence binary search, brute force, greedy, implementation	2000	x1596
490D	Chocolate brute force, dfs and similar, math, meet-in-the-middle, number theory	1900	x2138
490C	Hacking Cypher brute force, math, number theory, strings	1700	x9075
490B	Queue dsu, implementation	1500	x5988
490A	Team Olympiad greedy, implementation, sortings	800	x59063
489F	Special Matrices combinatorics, dp	2100	x1667
489E	Hiking binary search, dp	2300	x1028
489D	Unbearable Controversy of Being brute force, combinatorics, dfs and similar, graphs	1700	x6674
489C	Given Length and Sum of Digits... dp, greedy, implementation	1400	x46098
489B	BerSU Ball dfs and similar, dp, graph matchings, greedy, sortings, two pointers	1200	x48683
489A	SwapSort greedy, implementation, sortings	1200	x10042
488B	Candy Boxes brute force, constructive algorithms, math	1900	x2120
488A	Giga Tower brute force	1100	x14249
487E	Tourists data structures, dfs and similar, graphs, trees	3200	x2332
487D	Conveyor Belts data structures	2700	x892
487C	Prefix Product Sequence constructive algorithms, math, number theory	2300	x2770
487B	Strip binary search, data structures, dp, two pointers	2000	x3511
487A	Fight the Monster binary search, brute force, implementation	1800	x3721
486E	LIS of Sequence data structures, dp, greedy, hashing, math	2200	x2246
486D	Valid Sets dfs and similar, dp, math, trees	2100	x3975
486C	Palindrome Transformation brute force, greedy, implementation	1700	x11714
486B	OR in Matrix greedy, hashing, implementation	1300	x17573
486A	Calculating Function implementation, math	800	x117465
485B	Valuable Resources brute force, greedy	1300	x6527
485A	Factory implementation, math, matrices	1400	x8259
484E	Sign on Fence binary search, constructive algorithms, data structures	2500	x2329
484D	Kindergarten data structures, dp, greedy	2400	x2599
484C	Strange Sorting implementation, math	2600	x592
484B	Maximum Value binary search, math, sortings, two pointers	2100	x7026
484A	Bits bitmasks, constructive algorithms	1700	x11278
483B	Friends and Presents binary search, math	1800	x4073
483A	Counterexample brute force, implementation, math, number theory	1100	x23002
482E	ELCA data structures, trees	3200	x177
482D	Random Function and Tree combinatorics, dp, trees	2700	x531
482C	Game with Strings bitmasks, dp, probabilities	2600	x921
482B	Interesting Array constructive algorithms, data structures, trees	1800	x6449
482A	Diverse Permutation constructive algorithms, greedy	1200	x9636
480E	Parking Lot data structures, divide and conquer	2800	x554
480D	Parcels dp, graphs	2600	x460
479E	Riding in a Lift combinatorics, dp	1900	x5120
479D	Long Jumps binary search, greedy, implementation	1700	x4779
479C	Exams greedy, sortings	1400	x29560
479B	Towers brute force, constructive algorithms, greedy, implementation, sortings	1400	x7879
479A	Expression brute force, math	1000	x93649
478E	Wavy numbers brute force, dfs and similar, meet-in-the-middle, sortings	2900	x220
478D	Red-Green Towers dp	2000	x5911
478C	Table Decorations greedy	1800	x18195
478B	Random Teams combinatorics, constructive algorithms, greedy, math	1300	x36488
478A	Initial Bet implementation	1100	x25616
477E	Dreamoon and Notepad data structures	3100	x135
477D	Dreamoon and Binary dp, strings	2700	x524
476E	Dreamoon and Strings dp, strings	2200	x1968
476D	Dreamoon and Sets constructive algorithms, greedy, math	1900	x4647
476C	Dreamoon and Sums math	1600	x5723
476B	Dreamoon and WiFi bitmasks, brute force, combinatorics, dp, math, probabilities	1300	x30560
476A	Dreamoon and Stairs implementation, math	1000	x43612
475F	Meta-universe data structures	2900	x230
475E	Strongly Connected City 2 dfs and similar	2700	x412
475D	CGCDSSQ brute force, data structures, math	2000	x4837
475C	Kamal-ol-molk's Painting brute force, constructive algorithms, greedy	2100	x784
475B	Strongly Connected City brute force, dfs and similar, graphs, implementation	1400	x8463
475A	Bayan Bus implementation	1100	x4763
474F	Ant colony data structures, math, number theory	2100	x8574
474E	Pillars binary search, data structures, dp, sortings, trees	2000	x3307
474D	Flowers dp	1700	x25179
474C	Captain Marmot brute force, geometry	2000	x3116
474B	Worms binary search, implementation	1200	x48082
474A	Keyboard implementation	900	x45355
472G	Design Tutorial: Increase the Constraints bitmasks, data structures, fft	2800	x402
472F	Design Tutorial: Change the Goal constructive algorithms, math, matrices	2700	x256
472E	Design Tutorial: Learn from a Game constructive algorithms, implementation	2800	x131
472D	Design Tutorial: Inverse the Problem dfs and similar, dsu, shortest paths, trees	1900	x5397
472C	Design Tutorial: Make It Nondeterministic greedy	1400	x6362
472B	Design Tutorial: Learn from Life	1300	x7416