Problemset - Codeforces

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Codeforces Round 950 (Div. 3)
15:06:07
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Problems

#	Name
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x4718
1975D	Paint the Tree brute force, dfs and similar, dp, greedy, shortest paths, trees	1700	x4285
1974E	Money Buys Happiness dp	1800	x5758
1970E2	Trails (Medium) dp, matrices	2000	x776
1970E1	Trails (Easy) dp	1800	x1206
1970C3	Game on Tree (Hard) dfs and similar, dp, games, trees	1900	x913
1970C2	Game on Tree (Medium) dfs and similar, dp, games, trees	1700	x1548
1969C	Minimizing the Sum dp, implementation	1700	x6751
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x3398
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x3846
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x8131
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3384
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3715
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x6154
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x5183
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3659
1949C	Annual Ants' Gathering dfs and similar, dp, greedy, trees	1900	x1321
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x14888
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x9441
1945D	Seraphim the Owl dp, greedy	1300	x12634
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x8413
1941D	Rudolf and the Ball Game dfs and similar, dp, implementation	1200	x16942
1937B	Binary Path dp, greedy, implementation	1300	x13425
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x7309
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x17057
1932F	Feed Cats data structures, dp, sortings	1900	x3495
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x3750
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4251
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x18720
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x3053
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10400
1926C	Vlad and a Sum of Sum of Digits dp, implementation	1200	x23780
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3290
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x12582
1923E	Count Paths data structures, dfs and similar, dp, dsu, graphs, trees	2000	x3280
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3507
1919C	Grouping Increases data structures, dp, greedy	1400	x17102
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4343
1914F	Programming Competition dfs and similar, dp, graph matchings, greedy, trees	1900	x3747
1914D	Three Activities brute force, dp, greedy, implementation, sortings	1200	x18672
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x2104
1909I	Short Permutation Problem combinatorics, dp, fft, math	1900	x98
1906E	Merge Not Sort constructive algorithms, dp	1900	x1334
1902D	Robot Queries binary search, data structures, dp, implementation	1900	x3733
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x6293
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x3775
1900C	Anji's Binary Tree dfs and similar, dp, trees	1300	x10593
1895C	Torn Lucky Ticket brute force, dp, hashing, implementation, math	1400	x10233
1889C1	Doremy's Drying Plan (Easy Version) brute force, data structures, dp, greedy, sortings	2000	x3052
1884C	Medium Design brute force, data structures, dp, greedy, sortings	1700	x5557
1882D	Tree XOR bitmasks, dfs and similar, dp, greedy, trees	1900	x5049
1881F	Minimum Maximum Distance dfs and similar, dp, graphs, shortest paths, trees	1700	x6137
1881E	Block Sequence dp	1500	x12058
1879D	Sum of XOR Functions bitmasks, combinatorics, divide and conquer, dp, math	1700	x6706
1879C	Make it Alternating combinatorics, dp, greedy	1300	x15242
1875D	Jellyfish and Mex dp	1600	x7737
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x12262
1870C	Colorful Table binary search, data structures, dp, implementation, math, two pointers	1300	x10878
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	x6414
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x5769
1861D	Sorting By Multiplication dp, greedy	1800	x6350
1860C	Game on Permutation data structures, dp, games, greedy	1400	x12571
1859D	Andrey and Escape from Capygrad binary search, data structures, dp, dsu, greedy, sortings	1800	x6609
1859C	Another Permutation Problem brute force, dp, greedy, math	1200	x16430
1858B	The Walkway brute force, dp, greedy, math, number theory	1500	x10751
1856E1	PermuTree (easy version) dfs and similar, dp, trees	1800	x4963
1856C	To Become Max binary search, brute force, data structures, dp	1600	x11237
1851E	Nastya and Potions dfs and similar, dp, graphs, sortings	1500	x9557
1847C	Vampiric Powers, anyone? bitmasks, brute force, dp, greedy	1400	x12312
1846G	Rudolf and CodeVid-23 bitmasks, dp, graphs, greedy, shortest paths	1900	x4108
1846C	Rudolf and the Another Competition constructive algorithms, data structures, dp, greedy, sortings	1200	x18100
1845D	Rating System binary search, brute force, data structures, dp, dsu, greedy, math, two pointers	1800	x7396
1845C	Strong Password binary search, dp, greedy, strings	1400	x13466
1844C	Particles dp, greedy, implementation, math	1300	x14994
1843F1	Omsk Metro (simple version) data structures, dfs and similar, dp, graphs, greedy, math, trees	1800	x5030
1843D	Apple Tree combinatorics, dfs and similar, dp, math, trees	1200	x17181
1842C	Tenzing and Balls dp	1500	x11860
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x7375
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x4993
1830A	Copil Copac Draws Trees dfs and similar, dp, graphs, trees	1400	x12598
1829H	Don't Blame Me bitmasks, combinatorics, dp, math	1700	x7172
1829G	Hits Different data structures, dp, implementation, math	1600	x9558
1827B1	Range Sorting (Easy Version) binary search, dp, dsu, greedy, trees, two pointers	2000	x3695
1826D	Running Miles brute force, dp, greedy	1700	x8741
1822F	Gardening Friends brute force, dfs and similar, dp, graphs, trees	1700	x5673
1811E	Living Sequence binary search, dp, math, number theory	1500	x11678
1808C	Unlucky Numbers brute force, dp, greedy, implementation	1900	x3608
1805D	A Wide, Wide Graph dfs and similar, dp, graphs, greedy, trees	1800	x6109
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	x4155
1797D	Li Hua and Tree brute force, data structures, dfs and similar, dp, implementation, trees	1900	x3730
1796D	Maximum Subarray data structures, dp, greedy, two pointers	2000	x4006
1794D	Counting Factorizations combinatorics, divide and conquer, dp, math, number theory	1900	x3386
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x5826
1789C	Serval and Toxel's Arrays combinatorics, dp, implementation, math	1500	x8150
1787C	Remove the Bracket dp, greedy, math	1600	x6765
1783D	Different Arrays brute force, dp, implementation	2000	x4229
1779D	Boris and His Amazing Haircut constructive algorithms, data structures, dp, dsu, greedy, sortings	1700	x7572

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