Problemset - Codeforces

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Codeforces Round 946 (Div. 3)
3 days
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Problems

#	Name
1864A	Increasing and Decreasing constructive algorithms, greedy, implementation, math	800	x19789
1863C	MEX Repetition implementation, math	1100	x13418
1863B	Split Sort greedy, math, sortings	1100	x14612
1863A	Channel greedy, implementation	800	x17457
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x16082
1862C	Flower City Fence binary search, data structures, implementation, sortings	1100	x19704
1862B	Sequence Game constructive algorithms	800	x28854
1862A	Gift Carpet dp, greedy, implementation, strings	800	x30881
1861B	Two Binary Strings constructive algorithms, dp, greedy	1000	x20159
1861A	Prime Deletion constructive algorithms, math	800	x23143
1860B	Fancy Coins binary search, brute force, greedy, math	1200	x16078
1860A	Not a Substring constructive algorithms, strings	900	x20849
1859C	Another Permutation Problem brute force, dp, greedy, math	1200	x16351
1859B	Olya and Game with Arrays constructive algorithms, greedy, math, sortings	1000	x24428
1859A	United We Stand constructive algorithms, math, number theory	800	x29487
1858C	Yet Another Permutation Problem constructive algorithms, greedy, math, number theory	1000	x22010
1858A	Buttons games, greedy, math	800	x34515
1857D	Strong Vertices math, sortings, trees	1300	x17791
1857C	Assembly via Minimums greedy, sortings	1200	x23084
1857B	Maximum Rounding greedy, implementation, math	1100	x22163
1857A	Array Coloring greedy, math	800	x43763
1856B	Good Arrays implementation, math	900	x23189
1856A	Tales of a Sort implementation	800	x25832
1855B	Longest Divisors Interval brute force, combinatorics, greedy, math, number theory	900	x23928
1855A	Dalton the Teacher greedy, math	800	x27228
1853B	Fibonaccharsis binary search, brute force, math	1200	x16560
1853A	Desorting brute force, greedy, math	800	x28137
1851D	Prefix Permutation Sums implementation, math	1300	x14395
1851C	Tiles Comeback greedy	1000	x22303
1851B	Parity Sort greedy, sortings, two pointers	800	x28145
1851A	Escalator Conversations brute force, constructive algorithms, math	800	x28673
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x17300
1850E	Cardboard for Pictures binary search, geometry, implementation, math	1100	x20971
1850D	Balanced Round brute force, greedy, implementation, sortings	900	x32588
1850C	Word on the Paper implementation, strings	800	x41297
1850B	Ten Words of Wisdom implementation, sortings	800	x40556
1850A	To My Critics implementation, sortings	800	x51375
1849B	Monsters greedy, math, sortings	1000	x22826
1849A	Morning Sandwich implementation, math	800	x27094
1848B	Vika and the Bridge binary search, data structures, greedy, implementation, math, sortings	1200	x13443
1848A	Vika and Her Friends games, math	900	x16250
1847B	Hamon Odyssey bitmasks, greedy, two pointers	1000	x19124
1847A	The Man who became a God greedy, sortings	800	x21693
1846E1	Rudolf and Snowflakes (simple version) brute force, implementation, math	1300	x15430
1846D	Rudolph and Christmas Tree constructive algorithms, geometry, math	1200	x18377
1846C	Rudolf and the Another Competition constructive algorithms, data structures, dp, greedy, sortings	1200	x17989
1846B	Rudolph and Tic-Tac-Toe brute force, implementation, strings	800	x26125
1846A	Rudolph and Cut the Rope implementation, math	800	x31420
1845B	Come Together geometry, implementation, math	900	x20906
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x24699
1844C	Particles dp, greedy, implementation, math	1300	x14875
1844B	Permutations & Primes constructive algorithms, math	1000	x17464
1844A	Subtraction Game constructive algorithms, games	800	x23888
1843D	Apple Tree combinatorics, dfs and similar, dp, math, trees	1200	x17076
1843C	Sum in Binary Tree bitmasks, combinatorics, math, trees	800	x31173
1843B	Long Long greedy, math, two pointers	800	x28093
1843A	Sasha and Array Coloring greedy, sortings, two pointers	800	x33050
1842B	Tenzing and Books bitmasks, greedy, math	1100	x15716
1842A	Tenzing and Tsondu games, math	800	x19476
1841B	Keep it Beautiful implementation	1000	x20607
1841A	Game with Board constructive algorithms, games	800	x24253
1840C	Ski Resort combinatorics, math, two pointers	1000	x24733
1840B	Binary Cafe bitmasks, combinatorics, math	1100	x21542
1840A	Cipher Shifer implementation, strings, two pointers	800	x32669
1839C	Insert Zero and Invert Prefix constructive algorithms	1300	x11391
1839B	Lamps greedy, sortings	1100	x14506
1839A	The Good Array greedy, implementation, math	800	x17110
1838B	Minimize Permutation Subarrays constructive algorithms, math	1100	x15843
1838A	Blackboard List constructive algorithms, math	800	x21082
1837C	Best Binary String constructive algorithms, greedy	1000	x21149
1837B	Comparison String greedy	900	x26694
1837A	Grasshopper on a Line constructive algorithms, math	800	x29249
1836B	Astrophysicists greedy, math	1100	x12289
1836A	Destroyer implementation, sortings	800	x19807
1834C	Game with Reversing games, greedy, math, strings	1200	x12671
1834B	Maximum Strength greedy, math	1000	x14563
1834A	Unit Array greedy, math	800	x21320
1833C	Vlad Building Beautiful Array greedy, math	800	x25547
1833B	Restore the Weather greedy, sortings	900	x25447
1833A	Musical Puzzle implementation, strings	800	x31636
1832C	Contrast Value greedy, implementation	1200	x18345
1832B	Maximum Sum brute force, sortings, two pointers	1100	x19740
1832A	New Palindrome strings	800	x24916
1831B	Array merging constructive algorithms, greedy	1000	x18584
1831A	Twin Permutations constructive algorithms	800	x24342
1829F	Forever Winter dfs and similar, graphs, math	1300	x16250
1829E	The Lakes dfs and similar, dsu, graphs, implementation	1100	x18294
1829D	Gold Rush brute force, dfs and similar, dp, implementation	1000	x24311
1829C	Mr. Perfectly Fine bitmasks, greedy, implementation	800	x27199
1829B	Blank Space implementation	800	x41040
1829A	Love Story implementation, strings	800	x46135
1828B	Permutation Swap math, number theory	900	x20763
1828A	Divisible Array constructive algorithms, math	800	x23037
1827A	Counting Orders combinatorics, math, sortings, two pointers	1100	x17536
1826C	Dreaming of Freedom greedy, math, number theory	1300	x12832
1826B	Lunatic Never Content math, number theory	1100	x15847
1826A	Trust Nobody brute force, greedy, implementation, sortings	1200	x14534
1825B	LuoTianyi and the Table greedy, math	1000	x14194
1825A	LuoTianyi and the Palindrome String greedy, strings	800	x19296
1823C	Strongly Composite greedy, math, number theory	1300	x11695