Problemset - Codeforces

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Codeforces Round 978 (Div. 2)
6 days

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Difficulty: —

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Problems

#	Name
991B	Getting an A greedy, sortings	900	x12612
991A	If at first you don't succeed... implementation	1000	x10577
990G	GCD Counting divide and conquer, dp, dsu, number theory, trees	2400	x1852
990F	Flow Control dfs and similar, dp, greedy, trees	2400	x895
990E	Post Lamps brute force, greedy	2100	x2018
990D	Graph And Its Complement constructive algorithms, graphs, implementation	1700	x3832
990C	Bracket Sequences Concatenation Problem implementation	1500	x5894
990B	Micro-World greedy, sortings	1200	x8078
990A	Commentary Boxes implementation, math	1000	x10569
989E	A Trance of Nightfall dp, geometry, matrices, probabilities	2700	x235
989D	A Shade of Moonlight binary search, geometry, math, sortings, two pointers	2500	x517
989C	A Mist of Florescence constructive algorithms, graphs	1800	x3797
989B	A Tide of Riverscape constructive algorithms, strings	1200	x7048
989A	A Blend of Springtime implementation, strings	900	x10328
988F	Rain and Umbrellas dp	2100	x2322
988E	Divisibility by 25 brute force, greedy	2100	x3955
988D	Points and Powers of Two brute force, math	1800	x7277
988C	Equal Sums implementation, sortings	1400	x10200
988B	Substrings Sort sortings, strings	1100	x18446
988A	Diverse Team brute force, implementation	800	x24978
987C	Three displays brute force, dp, implementation	1400	x13517
987B	High School: Become Human math	1100	x11617
987A	Infinity Gauntlet implementation	800	x16538
986F	Oppa Funcan Style Remastered graphs, math, number theory, shortest paths	3300	x612
986E	Prince's Problem brute force, data structures, math, number theory, trees	2800	x794
986D	Perfect Encoding fft, math	3100	x330
986C	AND Graph bitmasks, dfs and similar, dsu, graphs	2500	x2449
986B	Petr and Permutations combinatorics, math	1800	x4653
986A	Fair graphs, greedy, number theory, shortest paths	1600	x6917
985G	Team Players combinatorics	2700	x518
985F	Isomorphic Strings hashing, strings	2300	x1858
985E	Pencils and Boxes binary search, data structures, dp, greedy, two pointers	2100	x3649
985D	Sand Fortress binary search, constructive algorithms, math	2100	x2551
985C	Liebig's Barrels greedy	1500	x5764
985B	Switches and Lamps implementation	1200	x7394
985A	Chess Placing implementation	1100	x8137
984B	Minesweeper implementation	1100	x7359
984A	Game sortings	800	x19411
983E	NN country binary search, data structures, trees	2800	x940
983D	Arkady and Rectangles data structures	3300	x388
983C	Elevator dp, graphs, shortest paths	2400	x833
983B	XOR-pyramid dp	1800	x5514
983A	Finite or not? implementation, math	1700	x4546
982F	The Meeting Place Cannot Be Changed dfs and similar, graphs	2700	x190
982E	Billiard geometry, number theory	2600	x707
982D	Shark brute force, data structures, dsu, trees	1900	x2297
982C	Cut 'em all! dfs and similar, dp, graphs, greedy, trees	1500	x11505
982B	Bus of Characters data structures, greedy, implementation	1300	x8286
982A	Row brute force, constructive algorithms	1200	x9063
981H	K Paths combinatorics, data structures, dp, fft, math	3100	x270
981G	Magic multisets data structures	2500	x685
981F	Round Marriage binary search, graph matchings, greedy	2500	x783
981E	Addition on Segments bitmasks, data structures, divide and conquer, dp	2200	x2094
981D	Bookshelves bitmasks, dp, greedy	1900	x3242
981C	Useful Decomposition implementation, trees	1400	x5406
981B	Businessmen Problems sortings	1000	x6943
981A	Antipalindrome brute force, implementation, strings	900	x9281
980F	Cactus to Tree dp, graphs, trees	2900	x196
980E	The Number Games data structures, greedy, trees	2200	x1924
980D	Perfect Groups dp, math, number theory	2100	x2673
980C	Posterized games, greedy	1700	x3786
980B	Marlin constructive algorithms	1600	x4688
980A	Links and Pearls implementation, math	900	x10419
979E	Kuro and Topological Parity dp	2400	x635
979D	Kuro and GCD and XOR and SUM binary search, bitmasks, brute force, data structures, dp, dsu, greedy, math, number theory, strings, trees	2200	x1817
979C	Kuro and Walking Route dfs and similar, trees	1600	x6260
979B	Treasure Hunt greedy	1800	x4415
979A	Pizza, Pizza, Pizza!!! math	1000	x13733
978G	Petya's Exams greedy, implementation, sortings	1700	x4362
978F	Mentors binary search, data structures, implementation	1500	x8278
978E	Bus Video System combinatorics, math	1400	x9541
978D	Almost Arithmetic Progression brute force, implementation, math	1500	x8738
978C	Letters binary search, implementation, two pointers	1000	x25543
978B	File Name greedy, strings	800	x36248
978A	Remove Duplicates implementation	800	x27095
977F	Consecutive Subsequence dp	1700	x18924
977E	Cyclic Components dfs and similar, dsu, graphs	1500	x20607
977D	Divide by three, multiply by two dfs and similar, math, sortings	1400	x18337
977C	Less or Equal sortings	1200	x34600
977B	Two-gram implementation, strings	900	x39292
977A	Wrong Subtraction implementation	800	x167118
976F	Minimal k-covering flows, graphs	2500	x580
976E	Well played! greedy, sortings	2100	x2397
976D	Degree Set constructive algorithms, graphs, implementation	2500	x687
976C	Nested Segments greedy, implementation, sortings	1500	x6888
976B	Lara Croft and the New Game implementation, math	1300	x5721
976A	Minimum Binary Number implementation	800	x10535
975E	Hag's Khashba geometry	2600	x308
975D	Ghosts geometry, math	2000	x2183
975C	Valhalla Siege binary search	1400	x9643
975B	Mancala brute force, implementation	1100	x6841
975A	Aramic script implementation, strings	900	x9257
967B	Watering System math, sortings	1000	x7089
967A	Mind the Gap implementation	1100	x4370
965E	Short Code data structures, dp, greedy, strings, trees	2200	x1442
965D	Single-use Stones binary search, flows, greedy, two pointers	1900	x3083
965C	Greedy Arkady math	2000	x2100
965B	Battleship implementation	1300	x4571
965A	Paper Airplanes math	800	x9517
964B	Messages math	1300	x4356