Problemset - Codeforces

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Codeforces Round 988 (Div. 3)
45:07:15
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Problems

#	Name
1406A	Subset Mex greedy, implementation, math	900	x21556
1405B	Array Cancellation constructive algorithms, implementation	1000	x21667
1405A	Permutation Forgery constructive algorithms	800	x21489
1404E	Bricks flows, graph matchings, graphs	2800	x1250
1404D	Game of Pairs constructive algorithms, dfs and similar, interactive, math, number theory	2800	x1094
1404C	Fixed Point Removal binary search, constructive algorithms, data structures, greedy, two pointers	2300	x2693
1404B	Tree Tag dfs and similar, dp, games, trees	1900	x7443
1404A	Balanced Bitstring implementation, strings	1500	x15598
1403C	Chess Rush *special problem, combinatorics, dp, implementation, math	3200	x53
1403B	Spring cleaning *special problem, data structures, dfs and similar, graphs, trees	2300	x367
1403A	The Potion of Great Power *special problem, 2-sat, binary search, data structures, graphs, interactive, sortings, two pointers	2400	x291
1402C	Star Trek *special problem, combinatorics, dfs and similar, dp, games, graphs, matrices, trees	2600	x205
1402B	Roads *special problem, geometry, sortings	2900	x113
1402A	Fancy Fence *special problem, data structures, dsu, implementation, math, sortings	1800	x1201
1401F	Reverse and Swap binary search, bitmasks, data structures	2400	x1764
1401E	Divide Square data structures, geometry, implementation, sortings	2400	x2453
1401D	Maximum Distributed Tree dfs and similar, dp, greedy, implementation, math, number theory, sortings, trees	1800	x9378
1401C	Mere Array constructive algorithms, math, number theory, sortings	1300	x24434
1401B	Ternary Sequence constructive algorithms, greedy, math	1100	x21146
1401A	Distance and Axis constructive algorithms, math	900	x27578
1400G	Mercenaries bitmasks, brute force, combinatorics, dp, dsu, math, two pointers	2600	x980
1400F	x-prime Substrings brute force, dfs and similar, dp, string suffix structures, strings	2800	x903
1400E	Clear the Multiset data structures, divide and conquer, dp, greedy	2200	x5519
1400D	Zigzags brute force, combinatorics, data structures, math, two pointers	1900	x10371
1400C	Binary String Reconstruction 2-sat, brute force, constructive algorithms, greedy	1500	x17397
1400B	RPG Protagonist brute force, greedy, math	1700	x11234
1400A	String Similarity constructive algorithms, strings	800	x27076
1399F	Yet Another Segments Subset data structures, dp, graphs, sortings	2300	x1625
1399E2	Weights Division (hard version) binary search, dfs and similar, greedy, sortings, trees, two pointers	2200	x2288
1399E1	Weights Division (easy version) data structures, dfs and similar, greedy, trees	2000	x5861
1399D	Binary String To Subsequences constructive algorithms, data structures, greedy, implementation	1500	x18373
1399C	Boats Competition brute force, greedy, two pointers	1200	x29311
1399B	Gifts Fixing greedy	800	x43756
1399A	Remove Smallest greedy, sortings	800	x67409
1398G	Running Competition bitmasks, fft, math, number theory	2600	x1119
1398F	Controversial Rounds binary search, data structures, dp, greedy, two pointers	2500	x1292
1398E	Two Types of Spells binary search, data structures, greedy, implementation, math, sortings	2200	x2434
1398D	Colored Rectangles dp, greedy, sortings	1800	x11548
1398C	Good Subarrays data structures, dp, math	1600	x26941
1398B	Substring Removal Game games, greedy, sortings	800	x24728
1398A	Bad Triangle geometry, math	800	x27710
1397B	Power Sequence brute force, math, number theory, sortings	1500	x14754
1397A	Juggling Letters greedy, strings	800	x28729
1396E	Distance Matching constructive algorithms, dfs and similar, trees	3200	x351
1396D	Rainbow Rectangles data structures, sortings, two pointers	3300	x310
1396C	Monster Invaders dp, greedy, implementation	2300	x2608
1396B	Stoned Game brute force, constructive algorithms, games, greedy	1800	x11480
1396A	Multiples of Length constructive algorithms, greedy, number theory	1600	x15532
1395C	Boboniu and Bit Operations bitmasks, brute force, dp, greedy	1600	x14198
1395B	Boboniu Plays Chess constructive algorithms	1100	x16072
1395A	Boboniu Likes to Color Balls brute force, math	1000	x24200
1394E	Boboniu and Banknote Collection strings	3500	x148
1394D	Boboniu and Jianghu dp, greedy, sortings, trees	2800	x1034
1394C	Boboniu and String binary search, geometry, ternary search	2600	x1118
1394B	Boboniu Walks on Graph brute force, dfs and similar, graphs, hashing	2300	x2031
1394A	Boboniu Chats with Du dp, greedy, sortings, two pointers	1800	x6804
1393E2	Twilight and Ancient Scroll (harder version) dp, hashing, implementation, string suffix structures, strings, two pointers	3200	x371
1393E1	Twilight and Ancient Scroll (easier version) dp, hashing, implementation, string suffix structures, strings	2800	x391
1393D	Rarity and New Dress dfs and similar, dp, implementation, shortest paths	2100	x4013
1393C	Pinkie Pie Eats Patty-cakes constructive algorithms, greedy, math, sortings	1700	x10652
1393B	Applejack and Storages constructive algorithms, data structures, greedy, implementation	1400	x16760
1393A	Rainbow Dash, Fluttershy and Chess Coloring greedy, math	800	x20540
1392I	Kevin and Grid fft, graphs, math	3300	x204
1392H	ZS Shuffles Cards combinatorics, dp, math, probabilities	3000	x770
1392G	Omkar and Pies bitmasks, dfs and similar, dp, math, shortest paths	2900	x507
1392F	Omkar and Landslide binary search, constructive algorithms, data structures, greedy, math	2400	x2183
1392E	Omkar and Duck bitmasks, constructive algorithms, interactive, math	2100	x3544
1392D	Omkar and Bed Wars dp, greedy	1700	x8981
1392C	Omkar and Waterslide greedy, implementation	1200	x18863
1392B	Omkar and Infinity Clock implementation, math	800	x18502
1392A	Omkar and Password greedy, math	800	x20788
1391E	Pairs of Pairs constructive algorithms, dfs and similar, graphs, greedy, trees	2600	x1717
1391D	505 bitmasks, brute force, constructive algorithms, dp, greedy, implementation	2000	x5331
1391C	Cyclic Permutations combinatorics, dp, graphs, math	1500	x15062
1391B	Fix You brute force, greedy, implementation	800	x27454
1391A	Suborrays constructive algorithms, math	800	x24445
1389G	Directing Edges dfs and similar, dp, graphs, trees	2800	x396
1389F	Bicolored Segments data structures, dp, graph matchings, sortings	2600	x986
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	x19112
1389B	Array Walk brute force, dp, greedy	1600	x16905
1389A	LCM Problem constructive algorithms, greedy, math, number theory	800	x41879
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	x6464
1388C	Uncle Bogdan and Country Happiness dfs and similar, greedy, math, trees	1800	x9761
1388B	Captain Flint and a Long Voyage greedy, math	1000	x22328
1388A	Captain Flint and Crew Recruitment brute force, greedy, math, number theory	800	x24980
1387C	Viruses *special problem, dp, shortest paths, string suffix structures	2900	x142
1387B2	Village (Maximum) *special problem, dfs and similar, trees	2500	x922
1387B1	Village (Minimum) *special problem, dp, greedy, trees	2100	x1485
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	x305
1385G	Columns Swaps 2-sat, dfs and similar, dsu, graphs, implementation	2300	x1561
1385F	Removing Leaves data structures, greedy, implementation, trees	2300	x2574
1385E	Directing Edges constructive algorithms, dfs and similar, graphs	2000	x7530
1385D	a-Good String bitmasks, brute force, divide and conquer, dp, implementation	1500	x19432
1385C	Make It Good greedy	1200	x27131