Problemset - Codeforces

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

→ Pay attention

Before contest
Codeforces Round 974 (Div. 3)
20:44:07
Register now »

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1089E	Easy Chess constructive algorithms	1700	x1971
1089D	Distance Sum graphs	3100	x100
1089C	Cactus Search interactive	2500	x407
1089B	Bimatching graphs	3200	x220
1089A	Alice the Fan dp	2200	x1121
1088F	Ehab and a weird weight formula data structures, trees	2800	x512
1088E	Ehab and a component choosing problem dp, greedy, math, trees	2400	x1477
1088D	Ehab and another another xor problem bitmasks, constructive algorithms, implementation, interactive	2000	x2829
1088C	Ehab and a 2-operation task constructive algorithms, greedy, math	1400	x8046
1088B	Ehab and subtraction implementation, sortings	1000	x12575
1088A	Ehab and another construction problem brute force, constructive algorithms	800	x16770
1086F	Forest Fires math	3500	x239
1085G	Beautiful Matrix combinatorics, data structures, dp	2900	x518
1085F	Rock-Paper-Scissors Champion	2500	x605
1085E	Vasya and Templates greedy, implementation, strings	2300	x1060
1085D	Minimum Diameter Tree constructive algorithms, implementation, trees	1700	x5421
1085C	Connect Three implementation, math	1600	x5427
1085B	Div Times Mod math	1100	x9280
1085A	Right-Left Cipher implementation, strings	800	x12138
1084C	The Fair Nut and String combinatorics, dp, implementation	1500	x8037
1084B	Kvass and the Fair Nut greedy, implementation	1200	x7799
1084A	The Fair Nut and Elevator brute force, implementation	1000	x7913
1083F	The Fair Nut and Amusing Xor data structures	3300	x275
1083E	The Fair Nut and Rectangles data structures, dp, geometry	2400	x4200
1083D	The Fair Nut's getting crazy data structures, implementation	3500	x235
1083C	Max Mex data structures, trees	2900	x890
1083B	The Fair Nut and Strings greedy, strings	2000	x1926
1083A	The Fair Nut and the Best Path data structures, dp, trees	1800	x5396
1082G	Petya and Graph flows, graphs	2400	x2087
1082F	Speed Dial dp, strings, trees	2800	x419
1082E	Increasing Frequency binary search, dp, greedy	2000	x4458
1082D	Maximum Diameter Graph constructive algorithms, graphs, implementation	1800	x3792
1082C	Multi-Subject Competition greedy, sortings	1600	x5701
1082B	Vova and Trophies greedy	1600	x7517
1082A	Vasya and Book implementation, math	1200	x8535
1081H	Palindromic Magic data structures, hashing, strings	3500	x105
1081G	Mergesort Strikes Back math, probabilities	3200	x346
1081F	Tricky Interactor constructive algorithms, implementation, interactive	2600	x463
1081E	Missing Numbers binary search, constructive algorithms, greedy, math, number theory	1900	x2583
1081D	Maximum Distance dsu, graphs, shortest paths, sortings	1800	x4036
1081C	Colorful Bricks combinatorics, dp, math	1500	x7247
1081B	Farewell Party constructive algorithms, implementation	1500	x4442
1081A	Definite Game constructive algorithms, math	800	x12017
1080F	Katya and Segments Sets data structures, interactive, sortings	2400	x705
1080E	Sonya and Matrix Beauty strings	2400	x1095
1080D	Olya and magical square constructive algorithms, implementation, math	2000	x1542
1080C	Masha and two friends implementation	1500	x4031
1080B	Margarite and the best present math	900	x11754
1080A	Petya and Origami math	800	x18058
1078E	Negative Time Summation constructive algorithms	3400	x87
1077F2	Pictures with Kittens (hard version) data structures, dp	2100	x3280
1077F1	Pictures with Kittens (easy version) dp	1900	x4383
1077E	Thematic Contests greedy, sortings	1800	x4667
1077D	Cutting Out binary search, sortings	1600	x8846
1077C	Good Array	1300	x17137
1077B	Disturbed People greedy	1000	x18930
1077A	Frog Jumping math	800	x29860
1076G	Array Game data structures, games	3000	x578
1076F	Summer Practice Report dp, greedy	2500	x638
1076E	Vasya and a Tree data structures, trees	1900	x3714
1076D	Edge Deletion graphs, greedy, shortest paths	1800	x5156
1076C	Meme Problem binary search, math	1300	x12409
1076B	Divisor Subtraction implementation, math, number theory	1200	x12908
1076A	Minimizing the String greedy, strings	1200	x13088
1075B	Taxi drivers and Lyft implementation, sortings	1200	x4239
1075A	The King's Race implementation, math	800	x8483
1073G	Yet Another LCP Problem data structures, string suffix structures	2600	x914
1073F	Choosing Two Paths dfs and similar, dp, greedy, trees	2500	x539
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2584
1073D	Berland Fair binary search, brute force, data structures, greedy	1700	x6393
1073C	Vasya and Robot binary search, two pointers	1800	x4710
1073B	Vasya and Books implementation, math	1000	x10546
1073A	Diverse Substring implementation, strings	1000	x15430
1071E	Rain Protection binary search, geometry	3500	x144
1070M	Algoland and Berland constructive algorithms, divide and conquer, geometry	3000	x67
1070L	Odd Federalization constructive algorithms	2600	x296
1070K	Video Posts implementation	1100	x4880
1070J	Streets and Avenues in Berhattan dp	2300	x694
1070I	Privatization of Roads in Berland flows, graph matchings, graphs	2400	x725
1070H	BerOS File Suggestion brute force, implementation	1500	x3643
1070G	Monsters and Potions brute force, dp, greedy, implementation	2300	x834
1070F	Debate greedy	1500	x3588
1070E	Getting Deals Done binary search, data structures	2100	x1383
1070D	Garbage Disposal greedy	1300	x4895
1070C	Cloud Computing data structures, greedy	2000	x2032
1070B	Berkomnadzor data structures, greedy	2400	x651
1070A	Find a Number dp, graphs, number theory, shortest paths	2200	x2334
1068C	Colored Rooks constructive algorithms, graphs	1700	x3149
1068B	LCM math, number theory	1200	x11482
1068A	Birthday math	1400	x6788
1067E	Random Forest Rank dp, graph matchings, math, trees	2800	x439
1067D	Computer Game dp, greedy, math, probabilities	3100	x386
1067C	Knights constructive algorithms	2600	x640
1067B	Multihedgehog dfs and similar, graphs, shortest paths	1800	x2659
1067A	Array Without Local Maximums dp	1900	x2863
1066F	Yet another 2D Walking dp	2100	x2034
1066E	Binary Numbers AND Sum data structures, implementation, math	1700	x6142
1066D	Boxes Packing binary search, implementation	1800	x5452
1066C	Books Queries implementation	1400	x9612
1066B	Heaters greedy, two pointers	1500	x8291