Problemset - Codeforces

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Educational Codeforces Round 167 (Rated for Div. 2)
34:12:35
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Problems

#	Name
1401A	Distance and Axis constructive algorithms, math	900	x27027
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x939
1400F	x-prime Substrings brute force, dfs and similar, dp, string suffix structures, strings	2800	x800
1400E	Clear the Multiset data structures, divide and conquer, dp, greedy	2200	x5062
1400D	Zigzags brute force, combinatorics, data structures, math, two pointers	1900	x9884
1400C	Binary String Reconstruction 2-sat, brute force, constructive algorithms, greedy	1500	x16872
1400B	RPG Protagonist brute force, greedy, math	1700	x10868
1400A	String Similarity constructive algorithms, strings	800	x26645
1399F	Yet Another Segments Subset data structures, dp, graphs, sortings	2300	x1573
1399E2	Weights Division (hard version) binary search, dfs and similar, greedy, sortings, trees, two pointers	2200	x2230
1399E1	Weights Division (easy version) data structures, dfs and similar, greedy, trees	2000	x5718
1399D	Binary String To Subsequences constructive algorithms, data structures, greedy, implementation	1500	x17824
1399C	Boats Competition brute force, greedy, two pointers	1200	x28068
1399B	Gifts Fixing greedy	800	x42719
1399A	Remove Smallest greedy, sortings	800	x63899
1398G	Running Competition bitmasks, fft, math, number theory	2600	x782
1398F	Controversial Rounds binary search, data structures, dp, greedy, two pointers	2500	x1073
1398E	Two Types of Spells binary search, data structures, greedy, implementation, math, sortings	2200	x2185
1398D	Colored Rectangles dp, greedy, sortings	1800	x11085
1398C	Good Subarrays data structures, dp, math	1600	x24772
1398B	Substring Removal Game games, greedy, sortings	800	x24166
1398A	Bad Triangle geometry, math	800	x27131
1397B	Power Sequence brute force, math, number theory, sortings	1500	x14430
1397A	Juggling Letters greedy, strings	800	x28246
1396E	Distance Matching constructive algorithms, dfs and similar, trees	3200	x333
1396D	Rainbow Rectangles data structures, sortings, two pointers	3300	x299
1396C	Monster Invaders dp, greedy, implementation	2300	x2405
1396B	Stoned Game brute force, constructive algorithms, games, greedy	1800	x11000
1396A	Multiples of Length constructive algorithms, greedy, number theory	1600	x15085
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x13633
1395B	Boboniu Plays Chess constructive algorithms	1100	x15803
1395A	Boboniu Likes to Color Balls brute force, math	1000	x23622
1394E	Boboniu and Banknote Collection strings	3500	x138
1394D	Boboniu and Jianghu dp, greedy, sortings, trees	2800	x813
1394C	Boboniu and String binary search, geometry, ternary search	2600	x907
1394B	Boboniu Walks on Graph brute force, dfs and similar, graphs, hashing	2300	x1797
1394A	Boboniu Chats with Du dp, greedy, sortings, two pointers	1800	x6496
1393E2	Twilight and Ancient Scroll (harder version) dp, hashing, implementation, string suffix structures, strings, two pointers	3200	x354
1393E1	Twilight and Ancient Scroll (easier version) dp, hashing, implementation, string suffix structures, strings	2800	x376
1393D	Rarity and New Dress dfs and similar, dp, implementation, shortest paths	2100	x3785
1393C	Pinkie Pie Eats Patty-cakes constructive algorithms, greedy, math, sortings	1700	x10311
1393B	Applejack and Storages constructive algorithms, data structures, greedy, implementation	1400	x16348
1393A	Rainbow Dash, Fluttershy and Chess Coloring greedy, math	800	x20252
1392I	Kevin and Grid fft, graphs, math	3300	x204
1392H	ZS Shuffles Cards combinatorics, dp, math, probabilities	3000	x688
1392G	Omkar and Pies bitmasks, dfs and similar, dp, math, shortest paths	2900	x454
1392F	Omkar and Landslide binary search, constructive algorithms, data structures, greedy, math	2400	x1948
1392E	Omkar and Duck bitmasks, constructive algorithms, interactive, math	2100	x3281
1392D	Omkar and Bed Wars dp, greedy	1700	x8517
1392C	Omkar and Waterslide greedy, implementation	1200	x18384
1392B	Omkar and Infinity Clock implementation, math	800	x18419
1392A	Omkar and Password greedy, math	800	x20276
1391E	Pairs of Pairs constructive algorithms, dfs and similar, graphs, greedy, trees	2600	x1464
1391D	505 bitmasks, brute force, constructive algorithms, dp, greedy, implementation	2000	x4978
1391C	Cyclic Permutations combinatorics, dp, graphs, math	1500	x14630
1391B	Fix You brute force, greedy, implementation	800	x26373
1391A	Suborrays constructive algorithms, math	800	x24063
1389G	Directing Edges dfs and similar, dp, graphs, trees	2800	x385
1389F	Bicolored Segments data structures, dp, graph matchings, sortings	2600	x956
1389E	Calendar Ambiguity math, number theory	2200	x3141
1389D	Segment Intersections brute force, greedy, implementation, math	2100	x4045
1389C	Good String brute force, dp, greedy, two pointers	1500	x18535
1389B	Array Walk brute force, dp, greedy	1600	x16058
1389A	LCM Problem constructive algorithms, greedy, math, number theory	800	x39264
1388E	Uncle Bogdan and Projections data structures, geometry, sortings	2700	x400
1388D	Captain Flint and Treasure data structures, dfs and similar, graphs, greedy, implementation, trees	2000	x6160
1388C	Uncle Bogdan and Country Happiness dfs and similar, greedy, math, trees	1800	x9411
1388B	Captain Flint and a Long Voyage greedy, math	1000	x21977
1388A	Captain Flint and Crew Recruitment brute force, greedy, math, number theory	800	x24609
1387C	Viruses *special problem, dp, shortest paths, string suffix structures	2900	x127
1387B2	Village (Maximum) *special problem, dfs and similar, trees	2500	x827
1387B1	Village (Minimum) *special problem, dp, greedy, trees	2100	x1351
1387A	Graph *special problem, binary search, dfs and similar, dp, math, ternary search	2100	x681
1386C	Joker *special problem, bitmasks, data structures, divide and conquer, dsu	2800	x440
1386B	Mixture *special problem, data structures, geometry, math, sortings	2900	x121
1386A	Colors *special problem, binary search, constructive algorithms, interactive	2700	x254
1385G	Columns Swaps 2-sat, dfs and similar, dsu, graphs, implementation	2300	x1355
1385F	Removing Leaves data structures, greedy, implementation, trees	2300	x2289
1385E	Directing Edges constructive algorithms, dfs and similar, graphs	2000	x6954
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x18580
1385C	Make It Good greedy	1200	x26379
1385B	Restore the Permutation by Merger greedy	800	x36550
1385A	Three Pairwise Maximums math	800	x38054
1384B2	Koa and the Beach (Hard Version) constructive algorithms, dp, greedy, implementation	2200	x2475
1384B1	Koa and the Beach (Easy Version) brute force, dp, greedy	1900	x3862
1384A	Common Prefixes constructive algorithms, greedy, strings	1200	x18446
1383F	Special Edges flows, graphs	3200	x328
1383E	Strange Operation combinatorics, data structures, dp	2800	x758
1383D	Rearrange brute force, constructive algorithms, graphs, greedy, sortings	2800	x659
1383C	String Transformation 2 bitmasks, dp, graphs, trees	3100	x564
1383B	GameGame bitmasks, constructive algorithms, dp, games, greedy, math	1900	x4792
1383A	String Transformation 1 dsu, graphs, greedy, sortings, strings, trees, two pointers	1700	x10280
1382B	Sequential Nim dp, games	1100	x24102
1382A	Common Subsequence brute force	800	x26139
1381E	Origami geometry, math, sortings	3300	x103
1381D	The Majestic Brown Tree Snake dfs and similar, dp, greedy, trees, two pointers	3000	x457
1381C	Mastermind constructive algorithms, graph matchings, greedy, implementation, sortings, two pointers	2500	x1400
1381B	Unmerge dp	1800	x8551
1381A2	Prefix Flip (Hard Version) constructive algorithms, data structures, implementation, strings, two pointers	1700	x12829
1381A1	Prefix Flip (Easy Version) constructive algorithms, data structures, strings	1300	x19941