Problemset - Codeforces

Problems

#	Name
919E	Congruence Equation chinese remainder theorem, math, number theory	2100	x2138
919D	Substring dfs and similar, dp, graphs	1700	x10129
919C	Seat Arrangements brute force, implementation	1300	x8991
919B	Perfect Number binary search, brute force, dp, implementation, number theory	1100	x28337
919A	Supermarket brute force, greedy, implementation	800	x16153
918B	Radio Station implementation, strings	900	x16847
918A	Eleven brute force, implementation	800	x17105
917E	Upside Down data structures, string suffix structures, strings, trees	3400	x136
917D	Stranger Trees dp, math, matrices, trees	2600	x1159
917C	Pollywog combinatorics, dp, matrices	2900	x405
917B	MADMAX dfs and similar, dp, games, graphs	1700	x3539
917A	The Monster dp, greedy, implementation, math	1800	x3525
916E	Jamie and Tree data structures, trees	2400	x1684
916D	Jamie and To-do List data structures, interactive, trees	2200	x517
916C	Jamie and Interesting Graph constructive algorithms, graphs, shortest paths	1600	x5124
916B	Jamie and Binary Sequence (changed after round) bitmasks, greedy, math	2000	x1919
916A	Jamie and Alarm Snooze brute force, implementation, math	900	x8611
915G	Coprime Arrays math, number theory	2300	x1269
915F	Imbalance Value of a Tree data structures, dsu, graphs, trees	2400	x2525
915E	Physical Education Lessons data structures, implementation, sortings	2300	x4483
915D	Almost Acyclic Graph dfs and similar, graphs	2200	x3453
915C	Permute Digits dp, greedy	1700	x7087
915B	Browser implementation	1300	x7791
915A	Garden implementation	900	x14792
914H	Ember and Storm's Tree Game combinatorics, dp, games, trees	3400	x239
914G	Sum the Fibonacci bitmasks, divide and conquer, dp, fft, math	2600	x933
914F	Substrings in a String bitmasks, brute force, data structures, string suffix structures, strings	3000	x1664
914E	Palindromes in a Tree bitmasks, data structures, divide and conquer, trees	2400	x1512
914D	Bash and a Tough Math Puzzle data structures, number theory	1900	x5340
914C	Travelling Salesman and Special Numbers brute force, combinatorics, dp	1800	x3834
914B	Conan and Agasa play a Card Game games, greedy, implementation	1200	x8633
914A	Perfect Squares brute force, implementation, math	900	x14167
913H	Don't Exceed math, probabilities	3400	x127
913G	Power Substring math, number theory	3200	x209
913F	Strongly Connected Tournament dp, graphs, math, probabilities	2800	x659
913E	Logical Expression bitmasks, dp, shortest paths	2400	x807
913D	Too Easy Problems binary search, brute force, data structures, greedy, sortings	1800	x4744
913C	Party Lemonade bitmasks, dp, greedy	1600	x7944
913B	Christmas Spruce implementation, trees	1200	x16155
913A	Modular Exponentiation implementation, math	900	x21378
912E	Prime Gift binary search, dfs and similar, math, meet-in-the-middle, number theory, two pointers	2400	x1600
912D	Fishes data structures, graphs, greedy, probabilities, shortest paths	2100	x2018
912C	Perun, Ult! brute force, greedy, sortings	2500	x520
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x12108
912A	Tricky Alchemy implementation	800	x13511
911G	Mass Change Queries data structures	2500	x2924
911F	Tree Destruction constructive algorithms, dfs and similar, graphs, greedy, trees	2400	x1747
911E	Stack Sorting constructive algorithms, data structures, greedy, implementation	2000	x2560
911D	Inversion Counting brute force, math	1800	x4607
911C	Three Garlands brute force, constructive algorithms	1400	x7049
911B	Two Cakes binary search, brute force, implementation	1200	x11426
911A	Nearest Minimums implementation	1100	x11489
910C	Minimum Sum constructive algorithms, greedy, math	1700	x1812
910B	Door Frames greedy, implementation	1600	x1708
910A	The Way to Home dfs and similar, dp, greedy, implementation	800	x12070
909F	AND-permutations constructive algorithms	2500	x581
909E	Coprocessor dfs and similar, dp, graphs, greedy	1900	x2109
909D	Colorful Points data structures, greedy, implementation	2100	x1947
909C	Python Indentation dp	1800	x4946
909B	Segments constructive algorithms, math	1300	x6414
909A	Generate Login brute force, greedy, sortings	1000	x9331
908H	New Year and Boolean Bridges	3100	x384
908G	New Year and Original Order dp, math	2800	x1369
908F	New Year and Rainbow Roads graphs, greedy, implementation	2400	x1400
908E	New Year and Entity Enumeration bitmasks, combinatorics, dp, math	2500	x759
908D	New Year and Arbitrary Arrangement dp, math, probabilities	2200	x2391
908C	New Year and Curling brute force, geometry, implementation, math	1500	x6928
908B	New Year and Buggy Bot brute force, implementation	1200	x7659
908A	New Year and Counting Cards brute force, implementation	800	x14824
907B	Tic-Tac-Toe implementation	1400	x4069
907A	Masha and Bears brute force, implementation	1300	x5708
906E	Reverses dp, string suffix structures, strings	3300	x453
906D	Power Tower chinese remainder theorem, math, number theory	2700	x2134
906C	Party bitmasks, brute force, dp, graphs	2400	x1369
906B	Seating of Students brute force, constructive algorithms, math	2200	x1143
906A	Shockers implementation, strings	1600	x4137
903G	Yet Another Maxflow Problem data structures, flows, graphs	2700	x532
903F	Clear The Matrix bitmasks, dp	2200	x659
903E	Swapping Characters brute force, hashing, implementation, strings	2200	x1479
903D	Almost Difference data structures, math	2200	x3856
903C	Boxes Packing greedy	1200	x18011
903B	The Modcrab greedy, implementation	1200	x7765
903A	Hungry Student Problem greedy, implementation	900	x14644
902B	Coloring a Tree dfs and similar, dsu, greedy	1200	x10878
902A	Visiting a Friend greedy, implementation	1100	x9846
901E	Cyclic Cipher fft, math	3300	x87
901D	Weighting a Tree constructive algorithms, dfs and similar, graphs	2700	x505
901C	Bipartite Segments binary search, data structures, dfs and similar, dsu, graphs, two pointers	2300	x1185
901B	GCD of Polynomials constructive algorithms, math	2200	x1584
901A	Hashing Trees constructive algorithms, trees	1500	x5128
900E	Maximum Questions data structures, dp, strings	2100	x1276
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x3263
900C	Remove Extra One brute force, data structures, math	1700	x4570
900B	Position in Fraction math, number theory	1300	x7863
900A	Find Extra One geometry, implementation	800	x13657
899F	Letters Removing data structures, strings	2100	x1853
899E	Segments Removal data structures, dsu, flows, implementation, two pointers	2000	x3086
899D	Shovel Sale constructive algorithms, math	1800	x2767
899C	Dividing the numbers constructive algorithms, graphs, math	1300	x8500
899B	Months and Years implementation	1200	x5898