Problemset - Codeforces

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Problems

#	Name
1987D	World is Mine dp, games	1800	x6049
1981C	Turtle and an Incomplete Sequence bitmasks, brute force, constructive algorithms, greedy, implementation, math	1800	x4619
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x5894
1974E	Money Buys Happiness dp	1800	x7119
1970E1	Trails (Easy) dp	1800	x1688
1968F	Equal XOR Segments binary search, data structures	1800	x4930
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x6079
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x6584
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x5602
1949I	Disks dfs and similar, geometry, graph matchings, graphs	1800	x1520
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x5603
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x7806
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x7732
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x3917
1923D	Slimes binary search, constructive algorithms, data structures, greedy, two pointers	1800	x6359
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7382
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x5906
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x2244
1910D	Remove and Add *special problem, greedy	1800	x342
1907F	Shift and Reverse greedy, sortings	1800	x4643
1904D2	Set To Max (Hard Version) constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings	1800	x4124
1872F	Selling a Menagerie dfs and similar, dsu, graphs, implementation, math	1800	x6080
1870D	Prefix Purchase greedy, implementation, sortings	1800	x6666
1867D	Cyclic Operations brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	1800	x5593
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x6012
1861D	Sorting By Multiplication dp, greedy	1800	x6531
1859D	Andrey and Escape from Capygrad binary search, data structures, dp, dsu, greedy, sortings	1800	x6801
1856E1	PermuTree (easy version) dfs and similar, dp, trees	1800	x5129
1852B	Imbalanced Arrays constructive algorithms, graphs, greedy, math, sortings, two pointers	1800	x4312
1852A	Ntarsis' Set binary search, math, number theory	1800	x7823
1851F	Lisa and the Martians bitmasks, greedy, math, strings, trees	1800	x5600
1848C	Vika and Price Tags math, number theory	1800	x6158
1846F	Rudolph and Mimic constructive algorithms, implementation, interactive	1800	x3004
1846E2	Rudolf and Snowflakes (hard version) binary search, brute force, implementation, math	1800	x6830
1845D	Rating System binary search, brute force, data structures, dp, dsu, greedy, math, two pointers	1800	x7596
1843F1	Omsk Metro (simple version) data structures, dfs and similar, dp, graphs, greedy, math, trees	1800	x5168
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x7633
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x5195
1824B1	LuoTianyi and the Floating Islands (Easy Version) combinatorics, math, probabilities, trees	1800	x4456
1809D	Binary String Sorting constructive algorithms, greedy	1800	x6136
1805D	A Wide, Wide Graph dfs and similar, dp, graphs, greedy, trees	1800	x6334
1801B	Buying gifts data structures, greedy, sortings	1800	x6052
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x5961
1781D	Many Perfect Squares brute force, math, number theory	1800	x5401
1780D	Bit Guessing Game binary search, bitmasks, constructive algorithms, interactive	1800	x4797
1775D	Friendly Spiders dfs and similar, graphs, math, number theory, shortest paths	1800	x6037
1769D1	Игра в Девятку I *special problem, brute force, dp	1800	x375
1768D	Lucky Permutation constructive algorithms, dfs and similar, graphs, greedy	1800	x6928
1759F	All Possible Digits binary search, data structures, greedy, math, number theory	1800	x3833
1758D	Range = √Sum binary search, brute force, constructive algorithms, math, two pointers	1800	x7124
1750D	Count GCD combinatorics, math, number theory	1800	x5743
1740E	Hanging Hearts constructive algorithms, data structures, dfs and similar, dp, greedy, trees	1800	x4232
1734D	Slime Escape data structures, dp, greedy, two pointers	1800	x6185
1732C1	Sheikh (Easy version) binary search, bitmasks, greedy, two pointers	1800	x5745
1729E	Guess the Cycle Size interactive, probabilities	1800	x6894
1728D	Letter Picking constructive algorithms, dp, games, two pointers	1800	x7061
1725M	Moving Both Hands dp, graphs, shortest paths	1800	x3026
1725H	Hot Black Hot White constructive algorithms, math	1800	x2551
1721D	Maximum AND bitmasks, dfs and similar, divide and conquer, greedy, sortings	1800	x6496
1720D1	Xor-Subsequence (easy version) bitmasks, brute force, dp, strings, trees, two pointers	1800	x5854
1718A1	Burenka and Traditions (easy version) dp, greedy	1800	x5633
1713D	Tournament Countdown constructive algorithms, greedy, interactive, number theory, probabilities	1800	x5569
1709C	Recover an RBS constructive algorithms, greedy, implementation, strings	1800	x8687
1705D	Mark and Lightbulbs combinatorics, constructive algorithms, greedy, math, sortings	1800	x6222
1691D	Max GEQ Sum binary search, constructive algorithms, data structures, divide and conquer, implementation, two pointers	1800	x5673
1678B2	Tokitsukaze and Good 01-String (hard version) dp, greedy, implementation	1800	x6502
1675F	Vlad and Unfinished Business dfs and similar, dp, greedy, trees	1800	x5181
1674F	Desktop Rearrangement data structures, greedy, implementation	1800	x4968
1666L	Labyrinth dfs and similar, graphs	1800	x3032
1666C	Connect the Points brute force, constructive algorithms, geometry	1800	x3127
1648B	Integral Array brute force, constructive algorithms, data structures, math	1800	x6321
1637D	Yet Another Minimization Problem dp, greedy, math	1800	x7576
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x6146
1630B	Range and Partition binary search, constructive algorithms, data structures, greedy, two pointers	1800	x5647
1620C	BA-String brute force, dp, greedy, implementation, math	1800	x6476
1619D	New Year's Problem binary search, greedy, sortings	1800	x7426
1617D1	Too Many Impostors (easy version) constructive algorithms, implementation, interactive	1800	x4609
1611F	ATM and Students binary search, data structures, two pointers	1800	x6331
1583D	Omkar and the Meaning of Life constructive algorithms, greedy, interactive	1800	x5317
1582F1	Korney Korneevich and XOR (easy version) bitmasks, dp, greedy	1800	x5435
1575D	Divisible by Twenty-Five brute force, dfs and similar, dp	1800	x2453
1572A	Book binary search, brute force, data structures, dp, graphs, implementation, sortings	1800	x8772
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	x7857
1556D	Take a Guess bitmasks, constructive algorithms, interactive, math	1800	x6745
1556C	Compressed Bracket Sequence brute force, implementation	1800	x5725
1554D	Diane constructive algorithms, greedy, strings	1800	x9258
1554C	Mikasa binary search, bitmasks, greedy, implementation	1800	x8722
1552D	Array Differentiation bitmasks, brute force, constructive algorithms, dfs and similar, dp, graphs, math	1800	x6877
1552C	Maximize the Intersections combinatorics, constructive algorithms, geometry, greedy, sortings	1800	x5847
1548B	Integers Have Friends binary search, data structures, divide and conquer, math, number theory, two pointers	1800	x9590
1535D	Playoff Tournament data structures, dfs and similar, dp, implementation, trees	1800	x7602
1534D	Lost Tree constructive algorithms, interactive, trees	1800	x5924
1525D	Armchairs dp, flows, graph matchings, greedy	1800	x9555
1517D	Explorer Space dp, graphs, shortest paths	1800	x7527
1509C	The Sports Festival dp, greedy	1800	x12170
1508B	Almost Sorted binary search, combinatorics, constructive algorithms, implementation	1800	x3907
1505E	Cakewalk *special problem, greedy, implementation, shortest paths	1800	x1741
1505D	Xenolith? Hippodrome? *special problem, number theory	1800	x756

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