Problemset - Codeforces

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Codeforces Round 970 (Div. 3)
08:08:49
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Problems

#	Name
1995C	Squaring brute force, constructive algorithms, greedy, implementation, math, number theory	1800	x7555
1990D	Grid Puzzle bitmasks, brute force, dp, greedy, implementation	1800	x5681
1987D	World is Mine dp, games	1800	x6627
1981C	Turtle and an Incomplete Sequence bitmasks, brute force, constructive algorithms, greedy, implementation, math	1800	x4965
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x6232
1974E	Money Buys Happiness dp	1800	x7502
1970E1	Trails (Easy) dp	1800	x1905
1968F	Equal XOR Segments binary search, data structures	1800	x5147
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x6352
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x6789
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x5827
1949I	Disks dfs and similar, geometry, graph matchings, graphs	1800	x1663
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x5784
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x8002
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x7920
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x4009
1923D	Slimes binary search, constructive algorithms, data structures, greedy, two pointers	1800	x6545
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7526
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x6100
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x2335
1910D	Remove and Add *special problem, greedy	1800	x346
1907F	Shift and Reverse greedy, sortings	1800	x4749
1904D2	Set To Max (Hard Version) constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings	1800	x4229
1872F	Selling a Menagerie dfs and similar, dsu, graphs, implementation, math	1800	x6220
1870D	Prefix Purchase greedy, implementation, sortings	1800	x6877
1867D	Cyclic Operations brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	1800	x5677
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x6149
1861D	Sorting By Multiplication dp, greedy	1800	x6651
1859D	Andrey and Escape from Capygrad binary search, data structures, dp, dsu, greedy, sortings	1800	x6910
1856E1	PermuTree (easy version) dfs and similar, dp, trees	1800	x5217
1852B	Imbalanced Arrays constructive algorithms, graphs, greedy, math, sortings, two pointers	1800	x4387
1852A	Ntarsis' Set binary search, math, number theory	1800	x7936
1851F	Lisa and the Martians bitmasks, greedy, math, strings, trees	1800	x5732
1848C	Vika and Price Tags math, number theory	1800	x6236
1846F	Rudolph and Mimic constructive algorithms, implementation, interactive	1800	x3061
1846E2	Rudolf and Snowflakes (hard version) binary search, brute force, implementation, math	1800	x6937
1845D	Rating System binary search, brute force, data structures, dp, dsu, greedy, math, two pointers	1800	x7713
1843F1	Omsk Metro (simple version) data structures, dfs and similar, dp, graphs, greedy, math, trees	1800	x5244
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x7738
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x5289
1824B1	LuoTianyi and the Floating Islands (Easy Version) combinatorics, math, probabilities, trees	1800	x4513
1809D	Binary String Sorting constructive algorithms, greedy	1800	x6219
1805D	A Wide, Wide Graph dfs and similar, dp, graphs, greedy, trees	1800	x6434
1801B	Buying gifts data structures, greedy, sortings	1800	x6149
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x6039
1781D	Many Perfect Squares brute force, math, number theory	1800	x5449
1780D	Bit Guessing Game binary search, bitmasks, constructive algorithms, interactive	1800	x4864
1775D	Friendly Spiders dfs and similar, graphs, math, number theory, shortest paths	1800	x6152
1769D1	Игра в Девятку I *special problem, brute force, dp	1800	x375
1768D	Lucky Permutation constructive algorithms, dfs and similar, graphs, greedy	1800	x7045
1759F	All Possible Digits binary search, data structures, greedy, math, number theory	1800	x3875
1758D	Range = √Sum binary search, brute force, constructive algorithms, math, two pointers	1800	x7228
1750D	Count GCD combinatorics, math, number theory	1800	x5818
1740E	Hanging Hearts constructive algorithms, data structures, dfs and similar, dp, greedy, trees	1800	x4282
1734D	Slime Escape data structures, dp, greedy, two pointers	1800	x6246
1732C1	Sheikh (Easy version) binary search, bitmasks, greedy, two pointers	1800	x5827
1729E	Guess the Cycle Size interactive, probabilities	1800	x6958
1728D	Letter Picking constructive algorithms, dp, games, two pointers	1800	x7150
1725M	Moving Both Hands dp, graphs, shortest paths	1800	x3079
1725H	Hot Black Hot White constructive algorithms, math	1800	x2576
1721D	Maximum AND bitmasks, dfs and similar, divide and conquer, greedy, sortings	1800	x6558
1720D1	Xor-Subsequence (easy version) bitmasks, brute force, dp, strings, trees, two pointers	1800	x5919
1718A1	Burenka and Traditions (easy version) dp, greedy	1800	x5703
1713D	Tournament Countdown constructive algorithms, greedy, interactive, number theory, probabilities	1800	x5622
1709C	Recover an RBS constructive algorithms, greedy, implementation, strings	1800	x8791
1705D	Mark and Lightbulbs combinatorics, constructive algorithms, greedy, math, sortings	1800	x6296
1691D	Max GEQ Sum binary search, constructive algorithms, data structures, divide and conquer, implementation, two pointers	1800	x5730
1678B2	Tokitsukaze and Good 01-String (hard version) dp, greedy, implementation	1800	x6562
1675F	Vlad and Unfinished Business dfs and similar, dp, greedy, trees	1800	x5256
1674F	Desktop Rearrangement data structures, greedy, implementation	1800	x5003
1666L	Labyrinth dfs and similar, graphs	1800	x3070
1666C	Connect the Points brute force, constructive algorithms, geometry	1800	x3146
1648B	Integral Array brute force, constructive algorithms, data structures, math	1800	x6365
1637D	Yet Another Minimization Problem dp, greedy, math	1800	x7646
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x6216
1630B	Range and Partition binary search, constructive algorithms, data structures, greedy, two pointers	1800	x5696
1620C	BA-String brute force, dp, greedy, implementation, math	1800	x6519
1619D	New Year's Problem binary search, greedy, sortings	1800	x7491
1617D1	Too Many Impostors (easy version) constructive algorithms, implementation, interactive	1800	x4653
1611F	ATM and Students binary search, data structures, two pointers	1800	x6394
1583D	Omkar and the Meaning of Life constructive algorithms, greedy, interactive	1800	x5349
1582F1	Korney Korneevich and XOR (easy version) bitmasks, dp, greedy	1800	x5509
1575D	Divisible by Twenty-Five brute force, dfs and similar, dp	1800	x2492
1572A	Book binary search, brute force, data structures, dp, graphs, implementation, sortings	1800	x8869
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x328
1571C	Rhyme *special problem, implementation	1800	x373
1560E	Polycarp and String Transformation binary search, implementation, sortings, strings	1800	x7917
1556D	Take a Guess bitmasks, constructive algorithms, interactive, math	1800	x6828
1556C	Compressed Bracket Sequence brute force, implementation	1800	x5763
1554D	Diane constructive algorithms, greedy, strings	1800	x9357
1554C	Mikasa binary search, bitmasks, greedy, implementation	1800	x8811
1552D	Array Differentiation bitmasks, brute force, constructive algorithms, dfs and similar, dp, graphs, math	1800	x6958
1552C	Maximize the Intersections combinatorics, constructive algorithms, geometry, greedy, sortings	1800	x5881
1548B	Integers Have Friends binary search, data structures, divide and conquer, math, number theory, two pointers	1800	x9704
1535D	Playoff Tournament data structures, dfs and similar, dp, implementation, trees	1800	x7667
1534D	Lost Tree constructive algorithms, interactive, trees	1800	x5983
1525D	Armchairs dp, flows, graph matchings, greedy	1800	x9664
1517D	Explorer Space dp, graphs, shortest paths	1800	x7648
1509C	The Sports Festival dp, greedy	1800	x12402
1508B	Almost Sorted binary search, combinatorics, constructive algorithms, implementation	1800	x3958

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