Problemset - Codeforces

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Educational Codeforces Round 174 (Rated for Div. 2)
34:48:04
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Problems

#	Name
2045M	Mirror Maze brute force, dfs and similar, graphs, implementation	1800	x1352
2043D	Problem about GCD brute force, flows, math, number theory	1800	x5714
2042C	Competitive Fishing greedy	1800	x6945
2039C2	Shohag Loves XOR (Hard Version) bitmasks, brute force, math, number theory	1800	x4098
2035D	Yet Another Real Number Problem binary search, data structures, divide and conquer, greedy, implementation, math	1800	x4987
2033F	Kosuke's Sloth brute force, math, number theory	1800	x5806
2032D	Genokraken constructive algorithms, data structures, graphs, greedy, implementation, interactive, trees, two pointers	1800	x5142
2025D	Attribute Checks brute force, data structures, dp, implementation, math, two pointers	1800	x6489
2022C	Gerrymandering dp, implementation	1800	x4484
2020D	Connect the Dots brute force, dp, dsu, graphs, math, trees	1800	x6065
2014E	Rendez-vous de Marian et Robin dfs and similar, graphs, shortest paths	1800	x6116
2008G	Sakurako's Task binary search, greedy, math, number theory	1800	x5551
2006B	Iris and the Tree brute force, data structures, dfs and similar, dsu, math, trees	1800	x3604
2005C	Lazy Narek dp, implementation, strings	1800	x7429
1995C	Squaring brute force, constructive algorithms, greedy, implementation, math, number theory	1800	x9015
1990D	Grid Puzzle bitmasks, brute force, dp, greedy, implementation	1800	x6637
1987D	World is Mine dp, games	1800	x7538
1981C	Turtle and an Incomplete Sequence bitmasks, brute force, constructive algorithms, greedy, implementation, math	1800	x5597
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x6925
1974E	Money Buys Happiness dp	1800	x8584
1970E1	Trails (Easy) dp	1800	x2508
1968F	Equal XOR Segments binary search, data structures	1800	x5827
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x7112
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x7489
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x6596
1949I	Disks dfs and similar, geometry, graph matchings, graphs	1800	x2053
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x6387
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x8655
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x8566
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x4323
1923D	Slimes binary search, constructive algorithms, data structures, greedy, two pointers	1800	x7207
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x8043
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x7007
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x2769
1910D	Remove and Add *special problem, greedy	1800	x370
1907F	Shift and Reverse greedy, sortings	1800	x5179
1904D2	Set To Max (Hard Version) constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings	1800	x4749
1872F	Selling a Menagerie dfs and similar, dsu, graphs, implementation, math	1800	x6638
1870D	Prefix Purchase greedy, implementation, sortings	1800	x7284
1867D	Cyclic Operations brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	1800	x6089
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x6607
1861D	Sorting By Multiplication dp, greedy	1800	x7094
1859D	Andrey and Escape from Capygrad binary search, data structures, dp, dsu, greedy, sortings	1800	x7285
1856E1	PermuTree (easy version) dfs and similar, dp, trees	1800	x5596
1852B	Imbalanced Arrays constructive algorithms, graphs, greedy, math, sortings, two pointers	1800	x4782
1852A	Ntarsis' Set binary search, math, number theory	1800	x8337
1851F	Lisa and the Martians bitmasks, greedy, math, strings, trees	1800	x6209
1848C	Vika and Price Tags math, number theory	1800	x6554
1846F	Rudolph and Mimic constructive algorithms, implementation, interactive	1800	x3275
1846E2	Rudolf and Snowflakes (hard version) binary search, brute force, implementation, math	1800	x7324
1845D	Rating System binary search, brute force, data structures, dp, dsu, greedy, math, two pointers	1800	x8135
1843F1	Omsk Metro (simple version) data structures, dfs and similar, dp, graphs, greedy, math, trees	1800	x5567
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x8101
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x5644
1824B1	LuoTianyi and the Floating Islands (Easy Version) combinatorics, math, probabilities, trees	1800	x4839
1809D	Binary String Sorting constructive algorithms, greedy	1800	x6544
1805D	A Wide, Wide Graph dfs and similar, dp, graphs, greedy, trees	1800	x7023
1801B	Buying gifts data structures, greedy, sortings	1800	x6570
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x6443
1781D	Many Perfect Squares brute force, math, number theory	1800	x5717
1780D	Bit Guessing Game binary search, bitmasks, constructive algorithms, interactive	1800	x5135
1775D	Friendly Spiders dfs and similar, graphs, math, number theory, shortest paths	1800	x6590
1769D1	Игра в Девятку I *special problem, brute force, dp	1800	x390
1768D	Lucky Permutation constructive algorithms, dfs and similar, graphs, greedy	1800	x7467
1759F	All Possible Digits binary search, data structures, greedy, math, number theory	1800	x4066
1758D	Range = √Sum binary search, brute force, constructive algorithms, math, two pointers	1800	x7626
1750D	Count GCD combinatorics, math, number theory	1800	x6219
1740E	Hanging Hearts constructive algorithms, data structures, dfs and similar, dp, greedy, trees	1800	x4510
1734D	Slime Escape data structures, dp, greedy, two pointers	1800	x6497
1732C1	Sheikh (Easy version) binary search, bitmasks, greedy, two pointers	1800	x6172
1729E	Guess the Cycle Size interactive, probabilities	1800	x7257
1728D	Letter Picking constructive algorithms, dp, games, two pointers	1800	x7519
1725M	Moving Both Hands dp, graphs, shortest paths	1800	x3279
1725H	Hot Black Hot White constructive algorithms, math	1800	x2714
1721D	Maximum AND bitmasks, dfs and similar, divide and conquer, greedy, sortings	1800	x6888
1720D1	Xor-Subsequence (easy version) bitmasks, brute force, dp, strings, trees, two pointers	1800	x6179
1718A1	Burenka and Traditions (easy version) dp, greedy	1800	x5955
1713D	Tournament Countdown constructive algorithms, greedy, interactive, number theory, probabilities	1800	x5815
1709C	Recover an RBS constructive algorithms, greedy, implementation, strings	1800	x9047
1705D	Mark and Lightbulbs combinatorics, constructive algorithms, greedy, math, sortings	1800	x6512
1691D	Max GEQ Sum binary search, constructive algorithms, data structures, divide and conquer, implementation, two pointers	1800	x6021
1678B2	Tokitsukaze and Good 01-String (hard version) dp, greedy, implementation	1800	x6750
1675F	Vlad and Unfinished Business dfs and similar, dp, greedy, trees	1800	x5569
1674F	Desktop Rearrangement data structures, greedy, implementation	1800	x5193
1666L	Labyrinth dfs and similar, graphs	1800	x3308
1666C	Connect the Points brute force, constructive algorithms, geometry	1800	x3336
1648B	Integral Array brute force, constructive algorithms, data structures, math	1800	x6630
1637D	Yet Another Minimization Problem dp, greedy, math	1800	x7993
1635D	Infinite Set bitmasks, dp, math, matrices, number theory, strings	1800	x6432
1630B	Range and Partition binary search, constructive algorithms, data structures, greedy, two pointers	1800	x5977
1620C	BA-String brute force, dp, greedy, implementation, math	1800	x6716
1619D	New Year's Problem binary search, greedy, sortings	1800	x7793
1617D1	Too Many Impostors (easy version) constructive algorithms, implementation, interactive	1800	x4818
1611F	ATM and Students binary search, data structures, two pointers	1800	x6730
1583D	Omkar and the Meaning of Life constructive algorithms, greedy, interactive	1800	x5490
1582F1	Korney Korneevich and XOR (easy version) bitmasks, dp, greedy	1800	x5865
1575D	Divisible by Twenty-Five brute force, dfs and similar, dp	1800	x2681
1572A	Book binary search, brute force, data structures, dp, graphs, implementation, sortings	1800	x9323
1571D	Sweepstake *special problem, brute force, constructive algorithms, implementation, math	1800	x346
1571C	Rhyme *special problem, implementation	1800	x385

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