Problemset - Codeforces

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Codeforces Round #661 (Div. 3)
21:13:43
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Problems

#	Name
1389G	Directing Edges dfs and similar, dp, graphs, trees	2800	x100
1389F	Bicolored Segments data structures, dp, graph matchings, sortings	2600	x349
1389E	Calendar Ambiguity math, number theory	2200	x1830
1389D	Segment Intersections brute force, greedy, implementation, math	2100	x2586
1389C	Good String brute force, dp, greedy, two pointers	1500	x9192
1389B	Array Walk brute force, dp, greedy	1600	x7782
1389A	LCM Problem constructive algorithms, greedy, math, number theory	800	x17940
1388E	Uncle Bogdan and Projections data structures, geometry, sortings	2700	x195
1388D	Captain Flint and Treasure data structures, dfs and similar, graphs, greedy, implementation, trees	2000	x3415
1388C	Uncle Bogdan and Country Happiness dfs and similar, greedy, math, trees	1800	x5553
1388B	Captain Flint and a Long Voyage greedy, math	1000	x14502
1388A	Captain Flint and Crew Recruitment brute force, greedy, math, number theory	800	x16588
1387C	Viruses *special problem, dp, shortest paths, string suffix structures	2900	x35
1387B2	Village (Maximum) *special problem, dfs and similar, trees	2500	x183
1387B1	Village (Minimum) *special problem, dp, greedy, trees	2100	x306
1387A	Graph *special problem, binary search, dfs and similar, dp, math, ternary search	2100	x270
1386C	Joker *special problem, bitmasks, data structures, divide and conquer, dsu	2800	x96
1386B	Mixture *special problem, data structures, geometry, math, sortings	2900	x52
1386A	Colors *special problem, binary search, constructive algorithms, interactive	2700	x105
1385G	Columns Swaps 2-sat, dfs and similar, dsu, graphs, implementation	2300	x653
1385F	Removing Leaves data structures, greedy, implementation, trees	2300	x1165
1385E	Directing Edges constructive algorithms, dfs and similar, graphs	2000	x3378
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x9179
1385C	Make It Good greedy	1200	x14747
1385B	Restore the Permutation by Merger greedy	800	x21174
1385A	Three Pairwise Maximums math	800	x20262
1384B2	Koa and the Beach (Hard Version) constructive algorithms, dp, greedy, implementation	2200	x1494
1384B1	Koa and the Beach (Easy Version) brute force, dp, greedy	1900	x2447
1384A	Common Prefixes constructive algorithms, greedy, strings	1200	x11210
1383F	Special Edges flows, graphs	3200	x35
1383E	Strange Operation combinatorics, data structures, dp	2800	x297
1383D	Rearrange brute force, constructive algorithms, graphs, greedy, sortings	2800	x216
1383C	String Transformation 2 bitmasks, dp, graphs, trees	3100	x164
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x2657
1383A	String Transformation 1 dsu, graphs, greedy, sortings, strings, trees, two pointers	1700	x6384
1382B	Sequential Nim dp, games	1100	x14694
1382A	Common Subsequence brute force	800	x18228
1381E	Origami geometry, math, sortings	3300	x40
1381D	The Majestic Brown Tree Snake dfs and similar, dp, greedy, trees, two pointers	3000	x135
1381C	Mastermind constructive algorithms, graph matchings, greedy, implementation, sortings, two pointers	2500	x865
1381B	Unmerge dp	1800	x4829
1381A2	Prefix Flip (Hard Version) constructive algorithms, data structures, implementation, strings, two pointers	1700	x8013
1381A1	Prefix Flip (Easy Version) constructive algorithms, data structures, strings	1300	x12443
1380G	Circular Dungeon greedy, math, probabilities	2600	x299
1380F	Strange Addition data structures, dp, matrices	2600	x345
1380E	Merging Towers data structures, dsu, implementation, trees	2300	x1029
1380D	Berserk And Fireball constructive algorithms, greedy, implementation, math, two pointers	2000	x2862
1380C	Create The Teams brute force, dp, greedy, implementation, sortings	1400	x9167
1380B	Universal Solution greedy	1400	x8499
1380A	Three Indices brute force, data structures	900	x12464
1379F2	Chess Strikes Back (hard version) data structures, divide and conquer	2800	x128
1379F1	Chess Strikes Back (easy version) binary search, data structures	2700	x187
1379E	Inverse Genealogy constructive algorithms, divide and conquer, dp, math, trees	2800	x99
1379D	New Passenger Trams binary search, brute force, data structures, sortings, two pointers	2300	x629
1379C	Choosing flowers binary search, brute force, data structures, dfs and similar, dp, greedy, sortings, two pointers	2000	x2778
1379B	Dubious Cyrpto binary search, brute force, math, number theory	1500	x7253
1379A	Acacius and String brute force, implementation, strings	1500	x7323
1375I	Cubic Lattice geometry, math, matrices, number theory	3500	x32
1375H	Set Merging constructive algorithms, divide and conquer	3300	x106
1375G	Tree Modification brute force, constructive algorithms, dfs and similar, graph matchings, graphs, trees	2800	x877
1375F	Integer Game constructive algorithms, games, interactive, math	2600	x1183
1375E	Inversion SwapSort constructive algorithms, greedy, sortings	2500	x1611
1375D	Replace by MEX brute force, constructive algorithms, sortings	1900	x5786
1375C	Element Extermination constructive algorithms, data structures, greedy	1400	x11221
1375B	Neighbor Grid constructive algorithms, greedy	1200	x11744
1375A	Sign Flipping constructive algorithms, math	1100	x13297
1374F	Cyclic Shifts Sorting brute force, constructive algorithms, implementation, sortings	2400	x837
1374E2	Reading Books (hard version) data structures, greedy, implementation, sortings, ternary search, two pointers	2500	x529
1374E1	Reading Books (easy version) data structures, greedy, sortings	1600	x8279
1374D	Zero Remainder Array math, sortings, two pointers	1400	x12145
1374C	Move Brackets greedy, strings	1000	x19491
1374B	Multiply by 2, divide by 6 math	900	x20915
1374A	Required Remainder math	800	x22718
1373G	Pawns data structures, divide and conquer, greedy	2600	x417
1373F	Network Coverage binary search, constructive algorithms, data structures, greedy	2400	x1078
1373E	Sum of Digits brute force, constructive algorithms, dp, greedy	2200	x1982
1373D	Maximum Sum on Even Positions divide and conquer, dp, greedy, implementation	1600	x8506
1373C	Pluses and Minuses math	1300	x12425
1373B	01 Game games	900	x17277
1373A	Donut Shops greedy, implementation, math	1000	x15471
1372F	Omkar and Modes binary search, divide and conquer, interactive	2700	x204
1372E	Omkar and Last Floor dp, greedy, two pointers	2900	x476
1372D	Omkar and Circle brute force, dp, games, greedy	2100	x3512
1372C	Omkar and Baseball constructive algorithms, math	1500	x10214
1372B	Omkar and Last Class of Math greedy, math, number theory	1300	x14352
1372A	Omkar and Completion constructive algorithms, implementation	800	x20061
1371F	Raging Thunder data structures, divide and conquer, implementation	2800	x268
1371E2	Asterism (Hard Version) binary search, combinatorics, dp, math, number theory, sortings	2300	x1612
1371E1	Asterism (Easy Version) binary search, brute force, combinatorics, math, number theory, sortings	1900	x3536
1371D	Grid-00100 constructive algorithms, greedy, implementation	1600	x8863
1371C	A Cookie for You greedy, implementation, math	1300	x13254
1371B	Magical Calendar math	1200	x14364
1371A	Magical Sticks math	800	x21684
1370F2	The Hidden Pair (Hard Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2700	x758
1370F1	The Hidden Pair (Easy Version) binary search, dfs and similar, graphs, interactive, shortest paths, trees	2400	x867
1370E	Binary Subsequence Rotation binary search, constructive algorithms, data structures, greedy	2100	x3310
1370D	Odd-Even Subsequence binary search, dp, dsu, greedy, implementation	2000	x5534
1370C	Number Game games, math, number theory	1400	x13003
1370B	GCD Compression constructive algorithms, math, number theory	1100	x15468
1370A	Maximum GCD greedy, implementation, math, number theory	800	x21601

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