Problemset - Codeforces

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Codeforces Round 950 (Div. 3)
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Problems

#	Name
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x4512
1975D	Paint the Tree brute force, dfs and similar, dp, greedy, shortest paths, trees	1700	x4173
1974E	Money Buys Happiness dp	1800	x5634
1970E2	Trails (Medium) dp, matrices	2000	x766
1970E1	Trails (Easy) dp	1800	x1187
1970C3	Game on Tree (Hard) dfs and similar, dp, games, trees	1900	x900
1970C2	Game on Tree (Medium) dfs and similar, dp, games, trees	1700	x1517
1969C	Minimizing the Sum dp, implementation	1700	x6707
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x3380
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x3832
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x8095
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3377
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3695
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x6133
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x5163
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3643
1949C	Annual Ants' Gathering dfs and similar, dp, greedy, trees	1900	x1313
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x9416
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x8386
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x7295
1932F	Feed Cats data structures, dp, sortings	1900	x3492
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x3744
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4248
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x3052
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3289
1923E	Count Paths data structures, dfs and similar, dp, dsu, graphs, trees	2000	x3276
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3503
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4341
1914F	Programming Competition dfs and similar, dp, graph matchings, greedy, trees	1900	x3744
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x2096
1909I	Short Permutation Problem combinatorics, dp, fft, math	1900	x98
1906E	Merge Not Sort constructive algorithms, dp	1900	x1331
1902D	Robot Queries binary search, data structures, dp, implementation	1900	x3729
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x6289
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x3768
1889C1	Doremy's Drying Plan (Easy Version) brute force, data structures, dp, greedy, sortings	2000	x3048
1884C	Medium Design brute force, data structures, dp, greedy, sortings	1700	x5552
1882D	Tree XOR bitmasks, dfs and similar, dp, greedy, trees	1900	x5040
1881F	Minimum Maximum Distance dfs and similar, dp, graphs, shortest paths, trees	1700	x6126
1879D	Sum of XOR Functions bitmasks, combinatorics, divide and conquer, dp, math	1700	x6700
1875D	Jellyfish and Mex dp	1600	x7721
1866C	Completely Searching for Inversions dfs and similar, dp, graphs	1900	x2887
1864D	Matrix Cascade brute force, constructive algorithms, data structures, dp, greedy, math	1700	x6402
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x5765
1861D	Sorting By Multiplication dp, greedy	1800	x6345
1859D	Andrey and Escape from Capygrad binary search, data structures, dp, dsu, greedy, sortings	1800	x6604
1856E1	PermuTree (easy version) dfs and similar, dp, trees	1800	x4958
1856C	To Become Max binary search, brute force, data structures, dp	1600	x11225
1846G	Rudolf and CodeVid-23 bitmasks, dp, graphs, greedy, shortest paths	1900	x4103
1845D	Rating System binary search, brute force, data structures, dp, dsu, greedy, math, two pointers	1800	x7393
1843F1	Omsk Metro (simple version) data structures, dfs and similar, dp, graphs, greedy, math, trees	1800	x5029
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x7373
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x4987
1829H	Don't Blame Me bitmasks, combinatorics, dp, math	1700	x7166
1829G	Hits Different data structures, dp, implementation, math	1600	x9547
1827B1	Range Sorting (Easy Version) binary search, dp, dsu, greedy, trees, two pointers	2000	x3693
1826D	Running Miles brute force, dp, greedy	1700	x8733
1822F	Gardening Friends brute force, dfs and similar, dp, graphs, trees	1700	x5663
1808C	Unlucky Numbers brute force, dp, greedy, implementation	1900	x3606
1805D	A Wide, Wide Graph dfs and similar, dp, graphs, greedy, trees	1800	x6099
1804D	Accommodation brute force, dp, greedy, implementation	2000	x4445
1801C	Music Festival binary search, data structures, dp, greedy, sortings	1900	x3251
1799D1	Hot Start Up (easy version) dp	1900	x4146
1797D	Li Hua and Tree brute force, data structures, dfs and similar, dp, implementation, trees	1900	x3729
1796D	Maximum Subarray data structures, dp, greedy, two pointers	2000	x3998
1794D	Counting Factorizations combinatorics, divide and conquer, dp, math, number theory	1900	x3385
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x5822
1787C	Remove the Bracket dp, greedy, math	1600	x6761
1783D	Different Arrays brute force, dp, implementation	2000	x4227
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x7564
1777D	Score of a Tree bitmasks, combinatorics, dfs and similar, dp, math, probabilities, trees	1900	x3249
1774E	Two Chess Pieces dfs and similar, dp, greedy, trees	1900	x3330
1769D1	Игра в Девятку I *special problem, brute force, dp	1800	x370
1764D	Doremy's Pegging Game combinatorics, dp, math	2000	x2656
1753C	Wish I Knew How to Sort dp, math, probabilities	2000	x4204
1749D	Counting Arrays combinatorics, dp, math, number theory	1900	x5328
1748C	Zero-Sum Prefixes brute force, data structures, dp, greedy, implementation	1600	x10565
1746D	Paths on the Tree dfs and similar, dp, greedy, sortings, trees	1900	x4444
1743D	Problem with Random Tests brute force, dp, greedy, probabilities	1700	x7356
1741E	Sending a Sequence Over the Network dp	1600	x11010
1740E	Hanging Hearts constructive algorithms, data structures, dfs and similar, dp, greedy, trees	1800	x4138
1734D	Slime Escape data structures, dp, greedy, two pointers	1800	x6065
1733D2	Zero-One (Hard Version) dp, greedy	2000	x4019
1731E	Graph Cost dp, greedy, math, number theory	2000	x2685
1731D	Valiant's New Map binary search, brute force, data structures, dp, two pointers	1700	x6801
1728D	Letter Picking constructive algorithms, dp, games, two pointers	1800	x6923
1725M	Moving Both Hands dp, graphs, shortest paths	1800	x2880
1722E	Counting Rectangles brute force, data structures, dp, implementation	1600	x10167
1720D1	Xor-Subsequence (easy version) bitmasks, brute force, dp, strings, trees, two pointers	1800	x5763
1718A2	Burenka and Traditions (hard version) data structures, dp, greedy	1900	x5034
1718A1	Burenka and Traditions (easy version) dp, greedy	1800	x5534
1716D	Chip Move brute force, dp, math	2000	x5021
1716C	Robot in a Hallway data structures, dp, greedy, implementation, ternary search	2000	x4032
1714D	Color with Occurrences brute force, data structures, dp, greedy, strings	1600	x8783
1703G	Good Key, Bad Key bitmasks, brute force, dp, greedy, math	1600	x10111
1700D	River Locks binary search, dp, greedy, math	1900	x5865
1695C	Zero Path brute force, data structures, dp, graphs, greedy, shortest paths	1700	x10439
1693B	Fake Plastic Trees dfs and similar, dp, greedy, trees	1700	x8117
1692H	Gambling data structures, dp, greedy, math	1700	x7132
1689D	Lena and Matrix data structures, dp, geometry, shortest paths	1900	x4051

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