Problemset - Codeforces

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

→ Pay attention

Before contest
Codeforces Round 977 (Div. 2)
3 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

Add tag

Problems

#	Name
1073G	Yet Another LCP Problem data structures, string suffix structures	2600	x915
1073F	Choosing Two Paths dfs and similar, dp, greedy, trees	2500	x544
1073E	Segment Sum bitmasks, combinatorics, dp, math	2300	x2609
1073D	Berland Fair binary search, brute force, data structures, greedy	1700	x6412
1073C	Vasya and Robot binary search, two pointers	1800	x4769
1073B	Vasya and Books implementation, math	1000	x10562
1073A	Diverse Substring implementation, strings	1000	x15473
1071E	Rain Protection binary search, geometry	3500	x144
1070M	Algoland and Berland constructive algorithms, divide and conquer, geometry	3000	x68
1070L	Odd Federalization constructive algorithms	2600	x297
1070K	Video Posts implementation	1100	x4886
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	x3651
1070G	Monsters and Potions brute force, dp, greedy, implementation	2300	x840
1070F	Debate greedy	1500	x3602
1070E	Getting Deals Done binary search, data structures	2100	x1383
1070D	Garbage Disposal greedy	1300	x4901
1070C	Cloud Computing data structures, greedy	2000	x2038
1070B	Berkomnadzor data structures, greedy	2400	x651
1070A	Find a Number dp, graphs, number theory, shortest paths	2200	x2352
1068C	Colored Rooks constructive algorithms, graphs	1700	x3159
1068B	LCM math, number theory	1200	x11512
1068A	Birthday math	1400	x6810
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	x644
1067B	Multihedgehog dfs and similar, graphs, shortest paths	1800	x2665
1067A	Array Without Local Maximums dp	1900	x2869
1066F	Yet another 2D Walking dp	2100	x2045
1066E	Binary Numbers AND Sum data structures, implementation, math	1700	x6156
1066D	Boxes Packing binary search, implementation	1800	x5465
1066C	Books Queries implementation	1400	x9640
1066B	Heaters greedy, two pointers	1500	x8323
1066A	Vova and Train math	1100	x14533
1065G	Fibonacci Suffix strings	2700	x255
1065F	Up and Down the Tree dfs and similar, dp, trees	2500	x1171
1065E	Side Transmutations combinatorics, strings	2300	x1077
1065D	Three Pieces dfs and similar, dp, shortest paths	2200	x1308
1065C	Make It Equal greedy	1600	x7810
1065B	Vasya and Isolated Vertices constructive algorithms, graphs	1300	x10902
1065A	Vasya and Chocolate implementation, math	800	x14630
1064B	Equations of Mathematical Magic math	1200	x7529
1064A	Make a triangle! brute force, geometry, math	800	x22430
1063F	String Journey data structures, dp, string suffix structures	3300	x885
1063E	Lasers and Mirrors constructive algorithms, math	3000	x352
1063D	Candies for Children brute force, math	2600	x433
1063C	Dwarves, Hats and Extrasensory Abilities binary search, constructive algorithms, geometry, interactive	1900	x3045
1063B	Labyrinth graphs, shortest paths	1800	x7420
1063A	Oh Those Palindromes constructive algorithms, strings	1300	x10348
1062F	Upgrading Cities dfs and similar, graphs	2900	x643
1062E	Company binary search, data structures, dfs and similar, greedy, trees	2300	x1783
1062D	Fun with Integers dfs and similar, graphs, implementation, math	1800	x3951
1062C	Banh-mi greedy, implementation, math	1600	x5414
1062B	Math greedy, math, number theory	1500	x8728
1062A	A Prank greedy, implementation	1300	x8799
1061F	Lost Root interactive, probabilities	2400	x745
1061E	Politics flows, graphs	2600	x531
1061D	TV Shows data structures, greedy, implementation, sortings	2000	x2363
1061C	Multiplicity data structures, dp, implementation, math, number theory	1700	x8809
1061B	Views Matter greedy, implementation, sortings	1400	x7297
1061A	Coins greedy, implementation, math	800	x21876
1060H	Sophisticated Device constructive algorithms	3300	x213
1060G	Balls and Pockets data structures	3400	x157
1060F	Shrinking Tree combinatorics, dp	2900	x601
1060E	Sergey and Subway dfs and similar, dp, trees	2000	x3140
1060D	Social Circles greedy, math	1900	x3630
1060C	Maximum Subrectangle binary search, implementation, two pointers	1600	x4889
1060B	Maximum Sum of Digits greedy	1100	x8915
1060A	Phone Numbers brute force	800	x14133
1059E	Split the Tree binary search, data structures, dp, greedy, trees	2400	x1409
1059D	Nature Reserve binary search, geometry, ternary search	2200	x2761
1059C	Sequence Transformation constructive algorithms, math	1600	x7113
1059B	Forgery implementation	1300	x7018
1059A	Cashier implementation	1000	x12838
1057C	Tanya and Colored Candies *special problem, dp	2000	x921
1057B	DDoS *special problem, brute force	1400	x1830
1057A	Bmail Computer Network *special problem, dfs and similar, trees	900	x6027
1056H	Detect Robots data structures, strings	3200	x158
1056G	Take Metro brute force, data structures, graphs	2900	x255
1056F	Write The Contest binary search, dp, math	2500	x653
1056E	Check Transcription brute force, data structures, hashing, strings	2100	x2249
1056D	Decorate Apple Tree constructive algorithms, dfs and similar, dp, graphs, greedy, sortings, trees	1600	x5880
1056C	Pick Heroes greedy, implementation, interactive, sortings	1700	x2368
1056B	Divide Candies math, number theory	1600	x4213
1056A	Determine Line implementation	800	x6629
1055G	Jellyfish Nightmare	3500	x81
1055F	Tree and XOR strings, trees	2900	x476
1055E	Segments on the Line binary search, dp	2500	x729
1055D	Refactoring greedy, implementation, strings	2400	x627
1055C	Lucky Days math, number theory	1900	x1911
1055B	Alice and Hairdresser dsu, implementation	1300	x4996
1055A	Metro graphs	900	x10705
1054H	Epic Convolution chinese remainder theorem, fft, math, number theory	3500	x177
1054G	New Road Network constructive algorithms, greedy, math	3300	x290
1054F	Electric Scheme flows, graph matchings	2700	x314
1054E	Chips Puzzle constructive algorithms, implementation, math	2400	x484
1054D	Changing Array greedy, implementation	1900	x2245
1054C	Candies Distribution constructive algorithms, implementation	1500	x4281
1054B	Appending Mex implementation	1000	x6587