Problemset - Codeforces

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Codeforces Round 987 (Div. 2)
10:23:21
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Problems

#	Name
1920C	Partitioning the Array brute force, math, number theory	1600	x13801
1919C	Grouping Increases data structures, dp, greedy	1400	x19318
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4846
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x14175
1917C	Watering an Array brute force, greedy, implementation, math	1600	x10583
1916D	Mathematical Problem brute force, constructive algorithms, geometry, math	1700	x8588
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x6518
1915F	Greetings data structures, divide and conquer, sortings	1500	x14026
1915E	Romantic Glasses data structures, greedy, math	1300	x22213
1914F	Programming Competition dfs and similar, dp, graph matchings, greedy, trees	1900	x4175
1914E2	Game with Marbles (Hard Version) games, greedy, sortings	1400	x12561
1914E1	Game with Marbles (Easy Version) brute force, games, greedy, sortings	1400	x12357
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x15184
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x2541
1912D	Divisibility Test math	1900	x1515
1912A	Accumulator Apex data structures, implementation, sortings	1900	x2140
1910D	Remove and Add *special problem, greedy	1800	x358
1910C	Poisonous Swamp special problem, special problem, implementation, implementation	1600	x637
1910B	Security Guard *special problem, greedy	1600	x681
1909I	Short Permutation Problem combinatorics, dp, fft, math	1900	x119
1909D	Split Plus K greedy, math, number theory	1900	x4482
1909C	Heavy Intervals constructive algorithms, data structures, dsu, greedy, math, sortings	1400	x11310
1907F	Shift and Reverse greedy, sortings	1800	x4945
1907E	Good Triples brute force, combinatorics, number theory	1600	x10465
1907D	Jumping Through Segments binary search, constructive algorithms	1400	x14522
1906M	Triangle Construction greedy, math	1700	x2762
1906E	Merge Not Sort constructive algorithms, dp	1900	x1607
1905C	Largest Subsequence greedy, strings	1400	x12433
1904D2	Set To Max (Hard Version) constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings	1800	x4498
1904D1	Set To Max (Easy Version) brute force, constructive algorithms, greedy	1600	x6867
1904C	Array Game binary search, brute force, data structures, sortings, two pointers	1400	x13556
1903D1	Maximum And Queries (easy version) binary search, bitmasks, brute force, greedy	1700	x5797
1903C	Theofanis' Nightmare constructive algorithms, greedy	1400	x12082
1902E	Collapsing Strings data structures, strings, trees	1900	x4382
1902D	Robot Queries binary search, data structures, dp, implementation	1900	x4194
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x13963
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x7110
1901C	Add, Divide and Floor constructive algorithms, greedy, math	1400	x12121
1900C	Anji's Binary Tree dfs and similar, dp, trees	1300	x11681
1899G	Unusual Entertainment data structures, dfs and similar, dsu, shortest paths, sortings, trees, two pointers	1900	x3261
1899F	Alex's whims constructive algorithms, graphs, greedy, shortest paths, trees	1600	x7779
1899E	Queue Sort greedy, implementation, sortings	1300	x15719
1899D	Yarik and Musical Notes hashing, math, number theory	1300	x13667
1898D	Absolute Beauty greedy, math	1900	x5316
1898C	Colorful Grid constructive algorithms	1700	x5620
1898B	Milena and Admirer greedy, math	1500	x12099
1896D	Ones and Twos binary search, data structures, divide and conquer, math, two pointers	1700	x5831
1896C	Matching Arrays binary search, constructive algorithms, greedy, sortings	1400	x9740
1895D	XOR Construction bitmasks, constructive algorithms, data structures, math, string suffix structures, trees	1900	x6133
1895C	Torn Lucky Ticket brute force, dp, hashing, implementation, math	1400	x11359
1893B	Neutral Tonality constructive algorithms, greedy, sortings, two pointers	1700	x9012
1893A	Anonymous Informant brute force, dfs and similar, graphs, implementation	1400	x12522
1891D	Suspicious logarithms binary search, brute force, math	1900	x4010
1891C	Smilo and Monsters binary search, constructive algorithms, greedy, sortings, two pointers	1500	x13559
1889B	Doremy's Connecting Plan constructive algorithms, greedy, math, sortings	1700	x7468
1889A	Qingshan Loves Strings 2 constructive algorithms, greedy, implementation	1300	x13344
1887B	Time Travel binary search, graphs, shortest paths	1900	x3062
1886C	Decreasing String implementation, strings	1600	x11696
1884C	Medium Design brute force, data structures, dp, greedy, sortings	1700	x6188
1883G2	Dances (Hard Version) binary search, greedy, sortings, two pointers	1900	x5471
1883G1	Dances (Easy version) binary search, greedy, two pointers	1400	x11325
1883F	You Are So Beautiful data structures	1400	x9669
1883E	Look Back bitmasks, greedy	1700	x8226
1883D	In Love data structures, greedy	1500	x11691
1882D	Tree XOR bitmasks, dfs and similar, dp, greedy, trees	1900	x5578
1882C	Card Game brute force, greedy	1500	x12507
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x15579
1881F	Minimum Maximum Distance dfs and similar, dp, graphs, shortest paths, trees	1700	x7096
1881E	Block Sequence dp	1500	x14610
1881D	Divide and Equalize math, number theory	1300	x17697
1879D	Sum of XOR Functions bitmasks, combinatorics, divide and conquer, dp, math	1700	x7537
1879C	Make it Alternating combinatorics, dp, greedy	1300	x17320
1878F	Vasilije Loves Number Theory brute force, math, number theory	1900	x4166
1878E	Iva & Pav binary search, bitmasks, data structures, greedy	1400	x13121
1878D	Reverse Madness data structures, greedy	1600	x8463
1876B	Effects of Anti Pimples combinatorics, number theory, sortings	1500	x8431
1875D	Jellyfish and Mex dp	1600	x8861
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x11862
1873H	Mad City dfs and similar, dsu, games, graphs, shortest paths, trees	1700	x7532
1873G	ABBC or BACB constructive algorithms, greedy	1500	x13554
1873F	Money Trees binary search, greedy, math, two pointers	1300	x15781
1872F	Selling a Menagerie dfs and similar, dsu, graphs, implementation, math	1800	x6429
1872E	Data Structures Fan binary search, bitmasks, data structures, dp	1500	x13960
1870D	Prefix Purchase greedy, implementation, sortings	1800	x7062
1870C	Colorful Table binary search, data structures, dp, implementation, math, two pointers	1300	x11591
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x7084
1868A	Fill in the Matrix constructive algorithms, implementation	1300	x12123
1867D	Cyclic Operations brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	1800	x5861
1867C	Salyg1n and the MEX Game constructive algorithms, data structures, games, greedy, interactive	1300	x11349
1866C	Completely Searching for Inversions dfs and similar, dp, graphs	1900	x3075
1866B	Battling with Numbers combinatorics, math, number theory	1400	x7827
1864D	Matrix Cascade brute force, constructive algorithms, data structures, dp, greedy, math	1700	x6840
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x13620
1863D	Two-Colored Dominoes constructive algorithms, greedy	1400	x9581
1862F	Magic Will Save the World binary search, bitmasks, brute force, dp	1800	x6352
1862E	Kolya and Movie Theatre constructive algorithms, data structures, greedy	1600	x10871
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x17401
1861D	Sorting By Multiplication dp, greedy	1800	x6859
1861C	Queries for the Array data structures, dfs and similar, implementation, strings, trees	1600	x10263
1860C	Game on Permutation data structures, dp, games, greedy	1400	x13478