Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
1905A	Constructive Problems constructive algorithms, math	800	x22275
1903E	Geo Game greedy, interactive, math	2000	x1879
1902F	Trees and XOR Queries Again data structures, dfs and similar, divide and conquer, graphs, implementation, math, trees	2400	x932
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x12844
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x6449
1901C	Add, Divide and Floor constructive algorithms, greedy, math	1400	x11153
1901B	Chip and Ribbon greedy, math	1100	x14389
1901A	Line Trip greedy, math	800	x27390
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x3889
1900B	Laura and Operations dp, math	900	x16594
1899D	Yarik and Musical Notes hashing, math, number theory	1300	x12749
1899A	Game with Integers games, math, number theory	800	x40607
1898D	Absolute Beauty greedy, math	1900	x4926
1898B	Milena and Admirer greedy, math	1500	x10994
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	x670
1896D	Ones and Twos binary search, data structures, divide and conquer, math, two pointers	1700	x5404
1895F	Fancy Arrays combinatorics, dp, math, matrices	2600	x661
1895D	XOR Construction bitmasks, constructive algorithms, data structures, math, string suffix structures, trees	1900	x5730
1895C	Torn Lucky Ticket brute force, dp, hashing, implementation, math	1400	x10475
1895B	Points and Minimum Distance greedy, math, sortings	800	x19992
1895A	Treasure Chest math	800	x23849
1891E	Brukhovich and Exams brute force, greedy, implementation, math, sortings	2500	x794
1891D	Suspicious logarithms binary search, brute force, math	1900	x3808
1891B	Deja Vu brute force, math, sortings	1100	x16627
1889B	Doremy's Connecting Plan constructive algorithms, greedy, math, sortings	1700	x6987
1887D	Split binary search, data structures, divide and conquer, dsu, math, trees, two pointers	2700	x839
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1374
1886D	Monocarp and the Set combinatorics, data structures, math	2100	x3406
1886B	Fear of the Dark binary search, geometry, math	1200	x15557
1886A	Sum of Three brute force, constructive algorithms, math	800	x25075
1884E	Hard Design greedy, implementation, math	2800	x271
1884D	Counting Rhyme dp, math, number theory	2100	x2987
1884B	Haunted House binary search, greedy, math, two pointers	1100	x12145
1884A	Simple Design brute force, greedy, math	800	x16908
1883C	Raspberries dp, math	1000	x24480
1883A	Morning math	800	x24701
1881D	Divide and Equalize math, number theory	1300	x15592
1881B	Three Threadlets math	900	x24407
1879D	Sum of XOR Functions bitmasks, combinatorics, divide and conquer, dp, math	1700	x6951
1878F	Vasilije Loves Number Theory brute force, math, number theory	1900	x3923
1878C	Vasilije in Cacak math	900	x30131
1878B	Aleksa and Stack constructive algorithms, math	800	x30597
1877C	Joyboard math, number theory	1200	x10452
1877A	Goals of Victory math	800	x20504
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x11176
1874E	Jellyfish and Hack dp, math	3000	x289
1874D	Jellyfish and Miku divide and conquer, dp, math, probabilities	2800	x675
1874C	Jellyfish and EVA dp, graphs, greedy, math, probabilities	2300	x1550
1873F	Money Trees binary search, greedy, math, two pointers	1300	x14587
1873C	Target Practice implementation, math	800	x37320
1873B	Good Kid brute force, greedy, math	800	x46196
1872G	Replace With Product brute force, greedy, math	2000	x4087
1872F	Selling a Menagerie dfs and similar, dsu, graphs, implementation, math	1800	x5992
1872D	Plus Minus Permutation math	1200	x22084
1872C	Non-coprime Split math, number theory	1100	x22605
1872A	Two Vessels brute force, greedy, math	800	x38090
1870F	Lazy Numbers binary search, math	2900	x469
1870C	Colorful Table binary search, data structures, dp, implementation, math, two pointers	1300	x11060
1870B	Friendly Arrays bitmasks, greedy, math	1200	x13739
1870A	MEXanized Array constructive algorithms, greedy, math	800	x18755
1869B	2D Traveling geometry, math, shortest paths, sortings	1100	x15120
1868C	Travel Plan combinatorics, dp, implementation, math, trees	2400	x1107
1868B2	Candy Party (Hard Version) bitmasks, constructive algorithms, dp, greedy, implementation, math	2100	x2325
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x6677
1867E1	Salyg1n and Array (simple version) constructive algorithms, interactive, math	2000	x3605
1866M	Mighty Rock Tower brute force, combinatorics, dp, math, probabilities	2400	x704
1866L	Lihmuf Balling binary search, brute force, math	2400	x664
1866B	Battling with Numbers combinatorics, math, number theory	1400	x7414
1866A	Ambitious Kid math	800	x19505
1864H	Asterism Stream dp, math, matrices	3200	x277
1864E	Guess Game bitmasks, data structures, games, math, probabilities, sortings, strings, trees	2100	x2505
1864D	Matrix Cascade brute force, constructive algorithms, data structures, dp, greedy, math	1700	x6502
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x12980
1864A	Increasing and Decreasing constructive algorithms, greedy, implementation, math	800	x19992
1863G	Swaps combinatorics, dp, graphs, math	2800	x587
1863F	Divide, XOR, and Conquer bitmasks, dp, math	2600	x1057
1863E	Speedrun brute force, dfs and similar, dp, graphs, greedy, math, sortings, two pointers	2100	x2657
1863C	MEX Repetition implementation, math	1100	x13647
1863B	Split Sort greedy, math, sortings	1100	x14834
1862G	The Great Equalizer binary search, data structures, math, sortings	2000	x2740
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x16496
1861E	Non-Intersecting Subpermutations combinatorics, dp, implementation, math	2300	x1650
1861A	Prime Deletion constructive algorithms, math	800	x23479
1860F	Evaluate RBS data structures, geometry, implementation, math, sortings	2900	x266
1860B	Fancy Coins binary search, brute force, greedy, math	1200	x16403
1859E	Maximum Monogonosity brute force, dp, math	2500	x1693
1859C	Another Permutation Problem brute force, dp, greedy, math	1200	x16572
1859B	Olya and Game with Arrays constructive algorithms, greedy, math, sortings	1000	x25344
1859A	United We Stand constructive algorithms, math, number theory	800	x30441
1858C	Yet Another Permutation Problem constructive algorithms, greedy, math, number theory	1000	x22408
1858B	The Walkway brute force, dp, greedy, math, number theory	1500	x10931
1858A	Buttons games, greedy, math	800	x35815
1857F	Sum and Product binary search, data structures, math	1600	x10820
1857E	Power of Points math, sortings	1500	x11866
1857D	Strong Vertices math, sortings, trees	1300	x18379
1857B	Maximum Rounding greedy, implementation, math	1100	x22469
1857A	Array Coloring greedy, math	800	x45240
1856E2	PermuTree (hard version) bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees	2700	x1335