Problemset - Codeforces

→ Pay attention

Before contest
CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
4 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1081B	Farewell Party constructive algorithms, implementation	1500	x4464
1081A	Definite Game constructive algorithms, math	800	x12118
1080F	Katya and Segments Sets data structures, interactive, sortings	2400	x723
1080E	Sonya and Matrix Beauty strings	2400	x1127
1080D	Olya and magical square constructive algorithms, implementation, math	2000	x1561
1080C	Masha and two friends implementation	1500	x4059
1080B	Margarite and the best present math	900	x11846
1080A	Petya and Origami math	800	x18224
1078E	Negative Time Summation constructive algorithms	3400	x88
1077F2	Pictures with Kittens (hard version) data structures, dp	2100	x3371
1077F1	Pictures with Kittens (easy version) dp	1900	x4477
1077E	Thematic Contests greedy, sortings	1800	x4736
1077D	Cutting Out binary search, sortings	1600	x8985
1077C	Good Array	1300	x17703
1077B	Disturbed People greedy	1000	x19085
1077A	Frog Jumping math	800	x30136
1076G	Array Game data structures, games	3000	x591
1076F	Summer Practice Report dp, greedy	2500	x645
1076E	Vasya and a Tree data structures, trees	1900	x3782
1076D	Edge Deletion graphs, greedy, shortest paths	1800	x5263
1076C	Meme Problem binary search, math	1300	x12510
1076B	Divisor Subtraction implementation, math, number theory	1200	x13107
1076A	Minimizing the String greedy, strings	1200	x13167
1075B	Taxi drivers and Lyft implementation, sortings	1200	x4258
1075A	The King's Race implementation, math	800	x8565
1073G	Yet Another LCP Problem data structures, string suffix structures	2600	x926
1073F	Choosing Two Paths dfs and similar, dp, greedy, trees	2500	x546
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2656
1073D	Berland Fair binary search, brute force, data structures, greedy	1700	x6434
1073C	Vasya and Robot binary search, two pointers	1800	x4810
1073B	Vasya and Books implementation, math	1000	x10600
1073A	Diverse Substring implementation, strings	1000	x15612
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	x700
1070I	Privatization of Roads in Berland flows, graph matchings, graphs	2400	x726
1070H	BerOS File Suggestion brute force, implementation	1500	x3666
1070G	Monsters and Potions brute force, dp, greedy, implementation	2300	x843
1070F	Debate greedy	1500	x3658
1070E	Getting Deals Done binary search, data structures	2100	x1388
1070D	Garbage Disposal greedy	1300	x4925
1070C	Cloud Computing data structures, greedy	2000	x2061
1070B	Berkomnadzor data structures, greedy	2400	x652
1070A	Find a Number dp, graphs, number theory, shortest paths	2200	x2372
1068C	Colored Rooks constructive algorithms, graphs	1700	x3166
1068B	LCM math, number theory	1200	x11687
1068A	Birthday math	1400	x6851
1067E	Random Forest Rank dp, graph matchings, math, trees	2800	x454
1067D	Computer Game dp, greedy, math, probabilities	3100	x406
1067C	Knights constructive algorithms	2600	x659
1067B	Multihedgehog dfs and similar, graphs, shortest paths	1800	x2710
1067A	Array Without Local Maximums dp	1900	x2898
1066F	Yet another 2D Walking dp	2100	x2072
1066E	Binary Numbers AND Sum data structures, implementation, math	1700	x6189
1066D	Boxes Packing binary search, implementation	1800	x5505
1066C	Books Queries implementation	1400	x9711
1066B	Heaters greedy, two pointers	1500	x8374
1066A	Vova and Train math	1100	x14608
1065G	Fibonacci Suffix strings	2700	x256
1065F	Up and Down the Tree dfs and similar, dp, trees	2500	x1191
1065E	Side Transmutations combinatorics, strings	2300	x1082
1065D	Three Pieces dfs and similar, dp, shortest paths	2200	x1324
1065C	Make It Equal greedy	1600	x7861
1065B	Vasya and Isolated Vertices constructive algorithms, graphs	1300	x10958
1065A	Vasya and Chocolate implementation, math	800	x14691
1064B	Equations of Mathematical Magic math	1200	x7558
1064A	Make a triangle! brute force, geometry, math	800	x22629
1063F	String Journey data structures, dp, string suffix structures	3300	x891
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	x7591
1063A	Oh Those Palindromes constructive algorithms, strings	1300	x10388
1062F	Upgrading Cities dfs and similar, graphs	2900	x662
1062E	Company binary search, data structures, dfs and similar, greedy, trees	2300	x1800
1062D	Fun with Integers dfs and similar, graphs, implementation, math	1800	x3967
1062C	Banh-mi greedy, implementation, math	1600	x5473
1062B	Math greedy, math, number theory	1500	x8868
1062A	A Prank greedy, implementation	1300	x8831
1061F	Lost Root interactive, probabilities	2400	x755
1061E	Politics flows, graphs	2600	x535
1061D	TV Shows data structures, greedy, implementation, sortings	2000	x2377
1061C	Multiplicity data structures, dp, implementation, math, number theory	1700	x9014
1061B	Views Matter greedy, implementation, sortings	1400	x7317
1061A	Coins greedy, implementation, math	800	x22086
1060H	Sophisticated Device constructive algorithms	3300	x213
1060G	Balls and Pockets data structures	3400	x159
1060F	Shrinking Tree combinatorics, dp	2900	x604
1060E	Sergey and Subway dfs and similar, dp, trees	2000	x3181
1060D	Social Circles greedy, math	1900	x3645
1060C	Maximum Subrectangle binary search, implementation, two pointers	1600	x4906
1060B	Maximum Sum of Digits greedy	1100	x8983
1060A	Phone Numbers brute force	800	x14261
1059E	Split the Tree binary search, data structures, dp, greedy, trees	2400	x1450
1059D	Nature Reserve binary search, geometry, ternary search	2200	x2778
1059C	Sequence Transformation constructive algorithms, math	1600	x7171
1059B	Forgery implementation	1300	x7093
1059A	Cashier implementation	1000	x12896