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
1084C	The Fair Nut and String combinatorics, dp, implementation	1500	x8248
1084B	Kvass and the Fair Nut greedy, implementation	1200	x7836
1084A	The Fair Nut and Elevator brute force, implementation	1000	x7943
1083F	The Fair Nut and Amusing Xor data structures	3300	x278
1083E	The Fair Nut and Rectangles data structures, dp, geometry	2400	x4358
1083D	The Fair Nut's getting crazy data structures, implementation	3500	x241
1083C	Max Mex data structures, trees	2900	x941
1083B	The Fair Nut and Strings greedy, strings	2000	x1966
1083A	The Fair Nut and the Best Path data structures, dp, trees	1800	x5500
1082G	Petya and Graph flows, graphs	2400	x2150
1082F	Speed Dial dp, strings, trees	2800	x423
1082E	Increasing Frequency binary search, dp, greedy	2000	x4685
1082D	Maximum Diameter Graph constructive algorithms, graphs, implementation	1800	x3829
1082C	Multi-Subject Competition greedy, sortings	1600	x5785
1082B	Vova and Trophies greedy	1600	x7599
1082A	Vasya and Book implementation, math	1200	x8626
1081H	Palindromic Magic data structures, hashing, strings	3500	x107
1081G	Mergesort Strikes Back math, probabilities	3200	x393
1081F	Tricky Interactor constructive algorithms, implementation, interactive	2600	x475
1081E	Missing Numbers binary search, constructive algorithms, greedy, math, number theory	1900	x2602
1081D	Maximum Distance dsu, graphs, shortest paths, sortings	1800	x4157
1081C	Colorful Bricks combinatorics, dp, math	1500	x7352
1081B	Farewell Party constructive algorithms, implementation	1500	x4465
1081A	Definite Game constructive algorithms, math	800	x12131
1080F	Katya and Segments Sets data structures, interactive, sortings	2400	x723
1080E	Sonya and Matrix Beauty strings	2400	x1132
1080D	Olya and magical square constructive algorithms, implementation, math	2000	x1561
1080C	Masha and two friends implementation	1500	x4062
1080B	Margarite and the best present math	900	x11851
1080A	Petya and Origami math	800	x18236
1078E	Negative Time Summation constructive algorithms	3400	x88
1077F2	Pictures with Kittens (hard version) data structures, dp	2100	x3388
1077F1	Pictures with Kittens (easy version) dp	1900	x4486
1077E	Thematic Contests greedy, sortings	1800	x4739
1077D	Cutting Out binary search, sortings	1600	x9004
1077C	Good Array	1300	x17747
1077B	Disturbed People greedy	1000	x19102
1077A	Frog Jumping math	800	x30162
1076G	Array Game data structures, games	3000	x595
1076F	Summer Practice Report dp, greedy	2500	x646
1076E	Vasya and a Tree data structures, trees	1900	x3784
1076D	Edge Deletion graphs, greedy, shortest paths	1800	x5294
1076C	Meme Problem binary search, math	1300	x12522
1076B	Divisor Subtraction implementation, math, number theory	1200	x13141
1076A	Minimizing the String greedy, strings	1200	x13186
1075B	Taxi drivers and Lyft implementation, sortings	1200	x4263
1075A	The King's Race implementation, math	800	x8567
1073G	Yet Another LCP Problem data structures, string suffix structures	2600	x926
1073F	Choosing Two Paths dfs and similar, dp, greedy, trees	2500	x547
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2659
1073D	Berland Fair binary search, brute force, data structures, greedy	1700	x6438
1073C	Vasya and Robot binary search, two pointers	1800	x4817
1073B	Vasya and Books implementation, math	1000	x10601
1073A	Diverse Substring implementation, strings	1000	x15629
1071E	Rain Protection binary search, geometry	3500	x146
1070M	Algoland and Berland constructive algorithms, divide and conquer, geometry	3000	x69
1070L	Odd Federalization constructive algorithms	2600	x302
1070K	Video Posts implementation	1100	x4955
1070J	Streets and Avenues in Berhattan dp	2300	x701
1070I	Privatization of Roads in Berland flows, graph matchings, graphs	2400	x726
1070H	BerOS File Suggestion brute force, implementation	1500	x3667
1070G	Monsters and Potions brute force, dp, greedy, implementation	2300	x844
1070F	Debate greedy	1500	x3660
1070E	Getting Deals Done binary search, data structures	2100	x1388
1070D	Garbage Disposal greedy	1300	x4926
1070C	Cloud Computing data structures, greedy	2000	x2062
1070B	Berkomnadzor data structures, greedy	2400	x652
1070A	Find a Number dp, graphs, number theory, shortest paths	2200	x2373
1068C	Colored Rooks constructive algorithms, graphs	1700	x3196
1068B	LCM math, number theory	1200	x11702
1068A	Birthday math	1400	x6852
1067E	Random Forest Rank dp, graph matchings, math, trees	2800	x454
1067D	Computer Game dp, greedy, math, probabilities	3100	x408
1067C	Knights constructive algorithms	2600	x661
1067B	Multihedgehog dfs and similar, graphs, shortest paths	1800	x2711
1067A	Array Without Local Maximums dp	1900	x2898
1066F	Yet another 2D Walking dp	2100	x2074
1066E	Binary Numbers AND Sum data structures, implementation, math	1700	x6194
1066D	Boxes Packing binary search, implementation	1800	x5513
1066C	Books Queries implementation	1400	x9720
1066B	Heaters greedy, two pointers	1500	x8380
1066A	Vova and Train math	1100	x14619
1065G	Fibonacci Suffix strings	2700	x256
1065F	Up and Down the Tree dfs and similar, dp, trees	2500	x1192
1065E	Side Transmutations combinatorics, strings	2300	x1083
1065D	Three Pieces dfs and similar, dp, shortest paths	2200	x1326
1065C	Make It Equal greedy	1600	x7879
1065B	Vasya and Isolated Vertices constructive algorithms, graphs	1300	x10966
1065A	Vasya and Chocolate implementation, math	800	x14696
1064B	Equations of Mathematical Magic math	1200	x7560
1064A	Make a triangle! brute force, geometry, math	800	x22655
1063F	String Journey data structures, dp, string suffix structures	3300	x892
1063E	Lasers and Mirrors constructive algorithms, math	3000	x356
1063D	Candies for Children brute force, math	2600	x435
1063C	Dwarves, Hats and Extrasensory Abilities binary search, constructive algorithms, geometry, interactive	1900	x3070
1063B	Labyrinth graphs, shortest paths	1800	x7621
1063A	Oh Those Palindromes constructive algorithms, strings	1300	x10399
1062F	Upgrading Cities dfs and similar, graphs	2900	x665
1062E	Company binary search, data structures, dfs and similar, greedy, trees	2300	x1809
1062D	Fun with Integers dfs and similar, graphs, implementation, math	1800	x3970