Problemset - Codeforces

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Codeforces Round (Div. 2)
6 days

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Problems

#	Name
920G	List Of Integers binary search, bitmasks, brute force, combinatorics, math, number theory	2200	x1744
920F	SUM and REPLACE brute force, data structures, dsu, number theory	2000	x6745
920E	Connected Components? data structures, dfs and similar, dsu, graphs	2100	x6322
920D	Tanks dp, greedy, implementation	2400	x710
920C	Swap Adjacent Elements dfs and similar, greedy, math, sortings, two pointers	1400	x9179
920B	Tea Queue implementation	1200	x7302
920A	Water The Garden implementation	1000	x7744
919F	A Game With Numbers games, graphs, shortest paths	2600	x337
919E	Congruence Equation chinese remainder theorem, math, number theory	2100	x2130
919D	Substring dfs and similar, dp, graphs	1700	x9937
919C	Seat Arrangements brute force, implementation	1300	x8969
919B	Perfect Number binary search, brute force, dp, implementation, number theory	1100	x28092
919A	Supermarket brute force, greedy, implementation	800	x16113
918B	Radio Station implementation, strings	900	x16405
918A	Eleven brute force, implementation	800	x17020
917E	Upside Down data structures, string suffix structures, strings, trees	3400	x133
917D	Stranger Trees dp, math, matrices, trees	2600	x1141
917C	Pollywog combinatorics, dp, matrices	2900	x393
917B	MADMAX dfs and similar, dp, games, graphs	1700	x3534
917A	The Monster dp, greedy, implementation, math	1800	x3511
916E	Jamie and Tree data structures, trees	2400	x1660
916D	Jamie and To-do List data structures, interactive, trees	2200	x510
916C	Jamie and Interesting Graph constructive algorithms, graphs, shortest paths	1600	x5093
916B	Jamie and Binary Sequence (changed after round) bitmasks, greedy, math	2000	x1906
916A	Jamie and Alarm Snooze brute force, implementation, math	900	x8594
915G	Coprime Arrays math, number theory	2300	x1231
915F	Imbalance Value of a Tree data structures, dsu, graphs, trees	2400	x2463
915E	Physical Education Lessons data structures, implementation, sortings	2300	x4391
915D	Almost Acyclic Graph dfs and similar, graphs	2200	x3427
915C	Permute Digits dp, greedy	1700	x7049
915B	Browser implementation	1300	x7738
915A	Garden implementation	900	x14680
914H	Ember and Storm's Tree Game combinatorics, dp, games, trees	3400	x238
914G	Sum the Fibonacci bitmasks, divide and conquer, dp, fft, math	2600	x929
914F	Substrings in a String bitmasks, brute force, data structures, string suffix structures, strings	3000	x1639
914E	Palindromes in a Tree bitmasks, data structures, divide and conquer, trees	2400	x1488
914D	Bash and a Tough Math Puzzle data structures, number theory	1900	x5288
914C	Travelling Salesman and Special Numbers brute force, combinatorics, dp	1800	x3745
914B	Conan and Agasa play a Card Game games, greedy, implementation	1200	x8612
914A	Perfect Squares brute force, implementation, math	900	x14079
913H	Don't Exceed math, probabilities	3400	x127
913G	Power Substring math, number theory	3200	x208
913F	Strongly Connected Tournament dp, graphs, math, probabilities	2800	x654
913E	Logical Expression bitmasks, dp, shortest paths	2400	x777
913D	Too Easy Problems binary search, brute force, data structures, greedy, sortings	1800	x4733
913C	Party Lemonade bitmasks, dp, greedy	1600	x7915
913B	Christmas Spruce implementation, trees	1200	x16049
913A	Modular Exponentiation implementation, math	900	x21244
912E	Prime Gift binary search, dfs and similar, math, meet-in-the-middle, number theory, two pointers	2400	x1579
912D	Fishes data structures, graphs, greedy, probabilities, shortest paths	2100	x2013
912C	Perun, Ult! brute force, greedy, sortings	2500	x518
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x12031
912A	Tricky Alchemy implementation	800	x13492
911G	Mass Change Queries data structures	2500	x2883
911F	Tree Destruction constructive algorithms, dfs and similar, graphs, greedy, trees	2400	x1707
911E	Stack Sorting constructive algorithms, data structures, greedy, implementation	2000	x2536
911D	Inversion Counting brute force, math	1800	x4595
911C	Three Garlands brute force, constructive algorithms	1400	x7038
911B	Two Cakes binary search, brute force, implementation	1200	x11371
911A	Nearest Minimums implementation	1100	x11451
910C	Minimum Sum constructive algorithms, greedy, math	1700	x1803
910B	Door Frames greedy, implementation	1600	x1702
910A	The Way to Home dfs and similar, dp, greedy, implementation	800	x11829
909F	AND-permutations constructive algorithms	2500	x581
909E	Coprocessor dfs and similar, dp, graphs, greedy	1900	x2076
909D	Colorful Points data structures, greedy, implementation	2100	x1937
909C	Python Indentation dp	1800	x4905
909B	Segments constructive algorithms, math	1300	x6388
909A	Generate Login brute force, greedy, sortings	1000	x9313
908H	New Year and Boolean Bridges	3100	x381
908G	New Year and Original Order dp, math	2800	x1357
908F	New Year and Rainbow Roads graphs, greedy, implementation	2400	x1395
908E	New Year and Entity Enumeration bitmasks, combinatorics, dp, math	2500	x759
908D	New Year and Arbitrary Arrangement dp, math, probabilities	2200	x2336
908C	New Year and Curling brute force, geometry, implementation, math	1500	x6911
908B	New Year and Buggy Bot brute force, implementation	1200	x7644
908A	New Year and Counting Cards brute force, implementation	800	x14802
907B	Tic-Tac-Toe implementation	1400	x4063
907A	Masha and Bears brute force, implementation	1300	x5694
906E	Reverses dp, string suffix structures, strings	3300	x447
906D	Power Tower chinese remainder theorem, math, number theory	2700	x2110
906C	Party bitmasks, brute force, dp, graphs	2400	x1353
906B	Seating of Students brute force, constructive algorithms, math	2200	x1141
906A	Shockers implementation, strings	1600	x4129
903G	Yet Another Maxflow Problem data structures, flows, graphs	2700	x529
903F	Clear The Matrix bitmasks, dp	2200	x650
903E	Swapping Characters brute force, hashing, implementation, strings	2200	x1465
903D	Almost Difference data structures, math	2200	x3777
903C	Boxes Packing greedy	1200	x17397
903B	The Modcrab greedy, implementation	1200	x7734
903A	Hungry Student Problem greedy, implementation	900	x14584
902B	Coloring a Tree dfs and similar, dsu, greedy	1200	x10815
902A	Visiting a Friend greedy, implementation	1100	x9807
901E	Cyclic Cipher fft, math	3300	x87
901D	Weighting a Tree constructive algorithms, dfs and similar, graphs	2700	x504
901C	Bipartite Segments binary search, data structures, dfs and similar, dsu, graphs, two pointers	2300	x1170
901B	GCD of Polynomials constructive algorithms, math	2200	x1583
901A	Hashing Trees constructive algorithms, trees	1500	x5114
900E	Maximum Questions data structures, dp, strings	2100	x1261
900D	Unusual Sequences bitmasks, combinatorics, dp, math, number theory	2000	x3224