Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
1909D	Split Plus K greedy, math, number theory	1900	x4155
1909C	Heavy Intervals constructive algorithms, data structures, dsu, greedy, math, sortings	1400	x10485
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x15245
1909A	Distinct Buttons implementation, math	800	x16021
1907C	Removal of Unattractive Pairs constructive algorithms, greedy, math, strings	1200	x19198
1906M	Triangle Construction greedy, math	1700	x2452
1906K	Deck-Building Game divide and conquer, math	2500	x272
1905E	One-X combinatorics, dfs and similar, dp, math, trees	2400	x896
1905D	Cyclic MEX data structures, implementation, math, two pointers	2000	x3638
1905A	Constructive Problems constructive algorithms, math	800	x22349
1903E	Geo Game greedy, interactive, math	2000	x1889
1902F	Trees and XOR Queries Again data structures, dfs and similar, divide and conquer, graphs, implementation, math, trees	2400	x940
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x12920
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x6493
1901C	Add, Divide and Floor constructive algorithms, greedy, math	1400	x11215
1901B	Chip and Ribbon greedy, math	1100	x14436
1901A	Line Trip greedy, math	800	x27680
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x3919
1900B	Laura and Operations dp, math	900	x16691
1899D	Yarik and Musical Notes hashing, math, number theory	1300	x12852
1899A	Game with Integers games, math, number theory	800	x40991
1898D	Absolute Beauty greedy, math	1900	x4963
1898B	Milena and Admirer greedy, math	1500	x11054
1896H2	Cyclic Hamming (Hard Version) brute force, dp, fft, math, number theory	3500	x98
1896H1	Cyclic Hamming (Easy Version) brute force, divide and conquer, dp, fft, math, number theory	3400	x87
1896F	Bracket Xoring constructive algorithms, greedy, implementation, math	2600	x676
1896D	Ones and Twos binary search, data structures, divide and conquer, math, two pointers	1700	x5432
1895F	Fancy Arrays combinatorics, dp, math, matrices	2600	x671
1895D	XOR Construction bitmasks, constructive algorithms, data structures, math, string suffix structures, trees	1900	x5758
1895C	Torn Lucky Ticket brute force, dp, hashing, implementation, math	1400	x10530
1895B	Points and Minimum Distance greedy, math, sortings	800	x20045
1895A	Treasure Chest math	800	x23897
1891E	Brukhovich and Exams brute force, greedy, implementation, math, sortings	2500	x797
1891D	Suspicious logarithms binary search, brute force, math	1900	x3825
1891B	Deja Vu brute force, math, sortings	1100	x16758
1889B	Doremy's Connecting Plan constructive algorithms, greedy, math, sortings	1700	x7012
1887D	Split binary search, data structures, divide and conquer, dsu, math, trees, two pointers	2700	x845
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1381
1886D	Monocarp and the Set combinatorics, data structures, math	2100	x3423
1886B	Fear of the Dark binary search, geometry, math	1200	x15619
1886A	Sum of Three brute force, constructive algorithms, math	800	x25168
1884E	Hard Design greedy, implementation, math	2800	x271
1884D	Counting Rhyme dp, math, number theory	2100	x3009
1884B	Haunted House binary search, greedy, math, two pointers	1100	x12201
1884A	Simple Design brute force, greedy, math	800	x16994
1883C	Raspberries dp, math	1000	x24713
1883A	Morning math	800	x24811
1881D	Divide and Equalize math, number theory	1300	x15772
1881B	Three Threadlets math	900	x24558
1879D	Sum of XOR Functions bitmasks, combinatorics, divide and conquer, dp, math	1700	x6983
1878F	Vasilije Loves Number Theory brute force, math, number theory	1900	x3947
1878C	Vasilije in Cacak math	900	x30373
1878B	Aleksa and Stack constructive algorithms, math	800	x30706
1877C	Joyboard math, number theory	1200	x10516
1877A	Goals of Victory math	800	x20719
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x11226
1874E	Jellyfish and Hack dp, math	3000	x293
1874D	Jellyfish and Miku divide and conquer, dp, math, probabilities	2800	x679
1874C	Jellyfish and EVA dp, graphs, greedy, math, probabilities	2300	x1555
1873F	Money Trees binary search, greedy, math, two pointers	1300	x14657
1873C	Target Practice implementation, math	800	x37575
1873B	Good Kid brute force, greedy, math	800	x46395
1872G	Replace With Product brute force, greedy, math	2000	x4104
1872F	Selling a Menagerie dfs and similar, dsu, graphs, implementation, math	1800	x6024
1872D	Plus Minus Permutation math	1200	x22275
1872C	Non-coprime Split math, number theory	1100	x22698
1872A	Two Vessels brute force, greedy, math	800	x38207
1870F	Lazy Numbers binary search, math	2900	x470
1870C	Colorful Table binary search, data structures, dp, implementation, math, two pointers	1300	x11107
1870B	Friendly Arrays bitmasks, greedy, math	1200	x13785
1870A	MEXanized Array constructive algorithms, greedy, math	800	x18782
1869B	2D Traveling geometry, math, shortest paths, sortings	1100	x15237
1868C	Travel Plan combinatorics, dp, implementation, math, trees	2400	x1108
1868B2	Candy Party (Hard Version) bitmasks, constructive algorithms, dp, greedy, implementation, math	2100	x2337
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x6704
1867E1	Salyg1n and Array (simple version) constructive algorithms, interactive, math	2000	x3626
1866M	Mighty Rock Tower brute force, combinatorics, dp, math, probabilities	2400	x707
1866L	Lihmuf Balling binary search, brute force, math	2400	x664
1866B	Battling with Numbers combinatorics, math, number theory	1400	x7439
1866A	Ambitious Kid math	800	x19662
1864H	Asterism Stream dp, math, matrices	3200	x277
1864E	Guess Game bitmasks, data structures, games, math, probabilities, sortings, strings, trees	2100	x2514
1864D	Matrix Cascade brute force, constructive algorithms, data structures, dp, greedy, math	1700	x6521
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x13026
1864A	Increasing and Decreasing constructive algorithms, greedy, implementation, math	800	x20026
1863G	Swaps combinatorics, dp, graphs, math	2800	x587
1863F	Divide, XOR, and Conquer bitmasks, dp, math	2600	x1067
1863E	Speedrun brute force, dfs and similar, dp, graphs, greedy, math, sortings, two pointers	2100	x2664
1863C	MEX Repetition implementation, math	1100	x13677
1863B	Split Sort greedy, math, sortings	1100	x14867
1862G	The Great Equalizer binary search, data structures, math, sortings	2000	x2750
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x16590
1861E	Non-Intersecting Subpermutations combinatorics, dp, implementation, math	2300	x1658
1861A	Prime Deletion constructive algorithms, math	800	x23534
1860F	Evaluate RBS data structures, geometry, implementation, math, sortings	2900	x266
1860B	Fancy Coins binary search, brute force, greedy, math	1200	x16464
1859E	Maximum Monogonosity brute force, dp, math	2500	x1718
1859C	Another Permutation Problem brute force, dp, greedy, math	1200	x16626
1859B	Olya and Game with Arrays constructive algorithms, greedy, math, sortings	1000	x25524
1859A	United We Stand constructive algorithms, math, number theory	800	x30604