Problemset - Codeforces

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Codeforces Round 974 (Div. 3)
11:32:42
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Problems

#	Name
1398F	Controversial Rounds binary search, data structures, dp, greedy, two pointers	2500	x1276
1398E	Two Types of Spells binary search, data structures, greedy, implementation, math, sortings	2200	x2416
1398D	Colored Rectangles dp, greedy, sortings	1800	x11456
1398C	Good Subarrays data structures, dp, math	1600	x26208
1398B	Substring Removal Game games, greedy, sortings	800	x24568
1398A	Bad Triangle geometry, math	800	x27493
1397B	Power Sequence brute force, math, number theory, sortings	1500	x14684
1397A	Juggling Letters greedy, strings	800	x28535
1396E	Distance Matching constructive algorithms, dfs and similar, trees	3200	x350
1396D	Rainbow Rectangles data structures, sortings, two pointers	3300	x308
1396C	Monster Invaders dp, greedy, implementation	2300	x2587
1396B	Stoned Game brute force, constructive algorithms, games, greedy	1800	x11358
1396A	Multiples of Length constructive algorithms, greedy, number theory	1600	x15413
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x14075
1395B	Boboniu Plays Chess constructive algorithms	1100	x16042
1395A	Boboniu Likes to Color Balls brute force, math	1000	x24074
1394E	Boboniu and Banknote Collection strings	3500	x146
1394D	Boboniu and Jianghu dp, greedy, sortings, trees	2800	x1019
1394C	Boboniu and String binary search, geometry, ternary search	2600	x1088
1394B	Boboniu Walks on Graph brute force, dfs and similar, graphs, hashing	2300	x2005
1394A	Boboniu Chats with Du dp, greedy, sortings, two pointers	1800	x6758
1393E2	Twilight and Ancient Scroll (harder version) dp, hashing, implementation, string suffix structures, strings, two pointers	3200	x363
1393E1	Twilight and Ancient Scroll (easier version) dp, hashing, implementation, string suffix structures, strings	2800	x387
1393D	Rarity and New Dress dfs and similar, dp, implementation, shortest paths	2100	x3995
1393C	Pinkie Pie Eats Patty-cakes constructive algorithms, greedy, math, sortings	1700	x10607
1393B	Applejack and Storages constructive algorithms, data structures, greedy, implementation	1400	x16659
1393A	Rainbow Dash, Fluttershy and Chess Coloring greedy, math	800	x20500
1392I	Kevin and Grid fft, graphs, math	3300	x204
1392H	ZS Shuffles Cards combinatorics, dp, math, probabilities	3000	x704
1392G	Omkar and Pies bitmasks, dfs and similar, dp, math, shortest paths	2900	x486
1392F	Omkar and Landslide binary search, constructive algorithms, data structures, greedy, math	2400	x2143
1392E	Omkar and Duck bitmasks, constructive algorithms, interactive, math	2100	x3523
1392D	Omkar and Bed Wars dp, greedy	1700	x8912
1392C	Omkar and Waterslide greedy, implementation	1200	x18748
1392B	Omkar and Infinity Clock implementation, math	800	x18468
1392A	Omkar and Password greedy, math	800	x20581
1391E	Pairs of Pairs constructive algorithms, dfs and similar, graphs, greedy, trees	2600	x1704
1391D	505 bitmasks, brute force, constructive algorithms, dp, greedy, implementation	2000	x5262
1391C	Cyclic Permutations combinatorics, dp, graphs, math	1500	x14990
1391B	Fix You brute force, greedy, implementation	800	x27175
1391A	Suborrays constructive algorithms, math	800	x24352
1389G	Directing Edges dfs and similar, dp, graphs, trees	2800	x392
1389F	Bicolored Segments data structures, dp, graph matchings, sortings	2600	x977
1389E	Calendar Ambiguity math, number theory	2200	x3438
1389D	Segment Intersections brute force, greedy, implementation, math	2100	x4305
1389C	Good String brute force, dp, greedy, two pointers	1500	x18982
1389B	Array Walk brute force, dp, greedy	1600	x16692
1389A	LCM Problem constructive algorithms, greedy, math, number theory	800	x41022
1388E	Uncle Bogdan and Projections data structures, geometry, sortings	2700	x590
1388D	Captain Flint and Treasure data structures, dfs and similar, graphs, greedy, implementation, trees	2000	x6417
1388C	Uncle Bogdan and Country Happiness dfs and similar, greedy, math, trees	1800	x9703
1388B	Captain Flint and a Long Voyage greedy, math	1000	x22265
1388A	Captain Flint and Crew Recruitment brute force, greedy, math, number theory	800	x24901
1387C	Viruses *special problem, dp, shortest paths, string suffix structures	2900	x129
1387B2	Village (Maximum) *special problem, dfs and similar, trees	2500	x900
1387B1	Village (Minimum) *special problem, dp, greedy, trees	2100	x1437
1387A	Graph *special problem, binary search, dfs and similar, dp, math, ternary search	2100	x711
1386C	Joker *special problem, bitmasks, data structures, divide and conquer, dsu	2800	x514
1386B	Mixture *special problem, data structures, geometry, math, sortings	2900	x121
1386A	Colors *special problem, binary search, constructive algorithms, interactive	2700	x263
1385G	Columns Swaps 2-sat, dfs and similar, dsu, graphs, implementation	2300	x1549
1385F	Removing Leaves data structures, greedy, implementation, trees	2300	x2527
1385E	Directing Edges constructive algorithms, dfs and similar, graphs	2000	x7421
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x19238
1385C	Make It Good greedy	1200	x26922
1385B	Restore the Permutation by Merger greedy	800	x37097
1385A	Three Pairwise Maximums math	800	x39016
1384B2	Koa and the Beach (Hard Version) constructive algorithms, dp, greedy, implementation	2200	x2491
1384B1	Koa and the Beach (Easy Version) brute force, dp, greedy	1900	x3892
1384A	Common Prefixes constructive algorithms, greedy, strings	1200	x18754
1383F	Special Edges flows, graphs	3200	x359
1383E	Strange Operation combinatorics, data structures, dp	2800	x780
1383D	Rearrange brute force, constructive algorithms, graphs, greedy, sortings	2800	x680
1383C	String Transformation 2 bitmasks, dp, graphs, trees	3100	x575
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x5042
1383A	String Transformation 1 dsu, graphs, greedy, sortings, strings, trees, two pointers	1700	x10569
1382B	Sequential Nim dp, games	1100	x24636
1382A	Common Subsequence brute force	800	x26482
1381E	Origami geometry, math, sortings	3300	x267
1381D	The Majestic Brown Tree Snake dfs and similar, dp, greedy, trees, two pointers	3000	x672
1381C	Mastermind constructive algorithms, graph matchings, greedy, implementation, sortings, two pointers	2500	x1626
1381B	Unmerge dp	1800	x8886
1381A2	Prefix Flip (Hard Version) constructive algorithms, data structures, implementation, strings, two pointers	1700	x13263
1381A1	Prefix Flip (Easy Version) constructive algorithms, data structures, strings	1300	x20450
1380G	Circular Dungeon greedy, math, probabilities	2600	x790
1380F	Strange Addition data structures, dp, matrices	2600	x782
1380E	Merging Towers data structures, dsu, implementation, trees	2300	x2176
1380D	Berserk And Fireball constructive algorithms, greedy, implementation, math, two pointers	2000	x4688
1380C	Create The Teams brute force, dp, greedy, implementation, sortings	1400	x20666
1380B	Universal Solution greedy	1400	x14585
1380A	Three Indices brute force, data structures	900	x25588
1379F2	Chess Strikes Back (hard version) data structures, divide and conquer	2800	x507
1379F1	Chess Strikes Back (easy version) binary search, data structures	2700	x598
1379E	Inverse Genealogy constructive algorithms, divide and conquer, dp, math, trees	2800	x427
1379D	New Passenger Trams binary search, brute force, data structures, sortings, two pointers	2300	x1076
1379C	Choosing flowers binary search, brute force, data structures, dfs and similar, dp, greedy, sortings, two pointers	2000	x5542
1379B	Dubious Cyrpto binary search, brute force, math, number theory	1500	x12639
1379A	Acacius and String brute force, implementation, strings	1500	x11912
1375I	Cubic Lattice geometry, math, matrices, number theory	3500	x265
1375H	Set Merging constructive algorithms, divide and conquer	3300	x417