Problemset - Codeforces

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Problems

#	Name
1389F	Bicolored Segments data structures, dp, graph matchings, sortings	2600	x987
1389E	Calendar Ambiguity math, number theory	2200	x3473
1389D	Segment Intersections brute force, greedy, implementation, math	2100	x4341
1389C	Good String brute force, dp, greedy, two pointers	1500	x19116
1389B	Array Walk brute force, dp, greedy	1600	x16919
1389A	LCM Problem constructive algorithms, greedy, math, number theory	800	x41920
1388E	Uncle Bogdan and Projections data structures, geometry, sortings	2700	x594
1388D	Captain Flint and Treasure data structures, dfs and similar, graphs, greedy, implementation, trees	2000	x6465
1388C	Uncle Bogdan and Country Happiness dfs and similar, greedy, math, trees	1800	x9770
1388B	Captain Flint and a Long Voyage greedy, math	1000	x22331
1388A	Captain Flint and Crew Recruitment brute force, greedy, math, number theory	800	x24996
1387C	Viruses *special problem, dp, shortest paths, string suffix structures	2900	x142
1387B2	Village (Maximum) *special problem, dfs and similar, trees	2500	x927
1387B1	Village (Minimum) *special problem, dp, greedy, trees	2100	x1488
1387A	Graph *special problem, binary search, dfs and similar, dp, math, ternary search	2100	x726
1386C	Joker *special problem, bitmasks, data structures, divide and conquer, dsu	2800	x557
1386B	Mixture *special problem, data structures, geometry, math, sortings	2900	x122
1386A	Colors *special problem, binary search, constructive algorithms, interactive	2700	x306
1385G	Columns Swaps 2-sat, dfs and similar, dsu, graphs, implementation	2300	x1562
1385F	Removing Leaves data structures, greedy, implementation, trees	2300	x2578
1385E	Directing Edges constructive algorithms, dfs and similar, graphs	2000	x7536
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x19441
1385C	Make It Good greedy	1200	x27142
1385B	Restore the Permutation by Merger greedy	800	x37343
1385A	Three Pairwise Maximums math	800	x39467
1384B2	Koa and the Beach (Hard Version) constructive algorithms, dp, greedy, implementation	2200	x2502
1384B1	Koa and the Beach (Easy Version) brute force, dp, greedy	1900	x3923
1384A	Common Prefixes constructive algorithms, greedy, strings	1200	x18846
1383F	Special Edges flows, graphs	3200	x359
1383E	Strange Operation combinatorics, data structures, dp	2800	x791
1383D	Rearrange brute force, constructive algorithms, graphs, greedy, sortings	2800	x689
1383C	String Transformation 2 bitmasks, dp, graphs, trees	3100	x578
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x5088
1383A	String Transformation 1 dsu, graphs, greedy, sortings, strings, trees, two pointers	1700	x10711
1382B	Sequential Nim dp, games	1100	x24742
1382A	Common Subsequence brute force	800	x26579
1381E	Origami geometry, math, sortings	3300	x267
1381D	The Majestic Brown Tree Snake dfs and similar, dp, greedy, trees, two pointers	3000	x683
1381C	Mastermind constructive algorithms, graph matchings, greedy, implementation, sortings, two pointers	2500	x1641
1381B	Unmerge dp	1800	x8967
1381A2	Prefix Flip (Hard Version) constructive algorithms, data structures, implementation, strings, two pointers	1700	x13352
1381A1	Prefix Flip (Easy Version) constructive algorithms, data structures, strings	1300	x20593
1380G	Circular Dungeon greedy, math, probabilities	2600	x811
1380F	Strange Addition data structures, dp, matrices	2600	x791
1380E	Merging Towers data structures, dsu, implementation, trees	2300	x2198
1380D	Berserk And Fireball constructive algorithms, greedy, implementation, math, two pointers	2000	x4710
1380C	Create The Teams brute force, dp, greedy, implementation, sortings	1400	x20862
1380B	Universal Solution greedy	1400	x14647
1380A	Three Indices brute force, data structures	900	x26348
1379F2	Chess Strikes Back (hard version) data structures, divide and conquer	2800	x511
1379F1	Chess Strikes Back (easy version) binary search, data structures	2700	x604
1379E	Inverse Genealogy constructive algorithms, divide and conquer, dp, math, trees	2800	x433
1379D	New Passenger Trams binary search, brute force, data structures, sortings, two pointers	2300	x1087
1379C	Choosing flowers binary search, brute force, data structures, dfs and similar, dp, greedy, sortings, two pointers	2000	x5617
1379B	Dubious Cyrpto binary search, brute force, math, number theory	1500	x12709
1379A	Acacius and String brute force, implementation, strings	1500	x11959
1375I	Cubic Lattice geometry, math, matrices, number theory	3500	x265
1375H	Set Merging constructive algorithms, divide and conquer	3300	x436
1375G	Tree Modification brute force, constructive algorithms, dfs and similar, graph matchings, graphs, trees	2800	x1977
1375F	Integer Game constructive algorithms, games, interactive, math	2600	x2269
1375E	Inversion SwapSort constructive algorithms, greedy, sortings	2500	x3092
1375D	Replace by MEX brute force, constructive algorithms, sortings	1900	x9275
1375C	Element Extermination constructive algorithms, data structures, greedy	1400	x21305
1375B	Neighbor Grid constructive algorithms, greedy	1200	x17316
1375A	Sign Flipping constructive algorithms, math	1100	x18392
1374F	Cyclic Shifts Sorting brute force, constructive algorithms, implementation, sortings	2400	x1303
1374E2	Reading Books (hard version) data structures, greedy, implementation, sortings, ternary search, two pointers	2500	x943
1374E1	Reading Books (easy version) data structures, greedy, sortings	1600	x14082
1374D	Zero Remainder Array math, sortings, two pointers	1400	x24096
1374C	Move Brackets greedy, strings	1000	x47718
1374B	Multiply by 2, divide by 6 math	900	x51437
1374A	Required Remainder math	800	x54446
1373G	Pawns data structures, divide and conquer, greedy	2600	x801
1373F	Network Coverage binary search, constructive algorithms, data structures, greedy	2400	x1670
1373E	Sum of Digits brute force, constructive algorithms, dp, greedy	2200	x2754
1373D	Maximum Sum on Even Positions divide and conquer, dp, greedy, implementation	1600	x15732
1373C	Pluses and Minuses math	1300	x18425
1373B	01 Game games	900	x36571
1373A	Donut Shops greedy, implementation, math	1000	x27212
1372F	Omkar and Modes binary search, divide and conquer, interactive	2700	x450
1372E	Omkar and Last Floor dp, greedy, two pointers	2900	x1188
1372D	Omkar and Circle brute force, dp, games, greedy	2100	x5415
1372C	Omkar and Baseball constructive algorithms, math	1500	x17943
1372B	Omkar and Last Class of Math greedy, math, number theory	1300	x28390
1372A	Omkar and Completion constructive algorithms, implementation	800	x32038
1371F	Raging Thunder data structures, divide and conquer, implementation	2800	x621
1371E2	Asterism (Hard Version) binary search, combinatorics, dp, math, number theory, sortings	2300	x2356
1371E1	Asterism (Easy Version) binary search, brute force, combinatorics, math, number theory, sortings	1900	x5252
1371D	Grid-00100 constructive algorithms, greedy, implementation	1600	x13029
1371C	A Cookie for You greedy, implementation, math	1300	x20601
1371B	Magical Calendar math	1200	x19206
1371A	Magical Sticks math	800	x46445
1370F2	The Hidden Pair (Hard Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2700	x1499
1370F1	The Hidden Pair (Easy Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2400	x1624
1370E	Binary Subsequence Rotation binary search, constructive algorithms, data structures, greedy	2100	x4918
1370D	Odd-Even Subsequence binary search, dp, dsu, greedy, implementation	2000	x9765
1370C	Number Game games, math, number theory	1400	x24761
1370B	GCD Compression constructive algorithms, math, number theory	1100	x23798
1370A	Maximum GCD greedy, implementation, math, number theory	800	x52891
1369F	BareLee dfs and similar, dp, games	2700	x653