Problemset - Codeforces

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Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)
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Problems

#	Name
1915E	Romantic Glasses data structures, greedy, math	1300	x22385
1914D	Three Activities brute force, dp, greedy, implementation, sortings	1200	x22420
1914C	Quests greedy, math	1100	x24770
1913C	Game with Multiset binary search, bitmasks, brute force, greedy	1300	x15228
1910A	Username *special problem, implementation	1100	x1797
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x17524
1907C	Removal of Unattractive Pairs constructive algorithms, greedy, math, strings	1200	x20457
1905B	Begginer's Zelda greedy, trees	1100	x16609
1904B	Collecting Game binary search, dp, greedy, sortings, two pointers	1100	x15893
1903B	StORage room bitmasks, brute force, constructive algorithms, greedy	1200	x12975
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x14007
1902B	Getting Points binary search, brute force, greedy	1100	x14636
1901B	Chip and Ribbon greedy, math	1100	x15134
1900C	Anji's Binary Tree dfs and similar, dp, trees	1300	x11725
1899E	Queue Sort greedy, implementation, sortings	1300	x15772
1899D	Yarik and Musical Notes hashing, math, number theory	1300	x13700
1899C	Yarik and Array dp, greedy, two pointers	1100	x21735
1899B	250 Thousand Tons of TNT brute force, implementation, number theory	1100	x21157
1891B	Deja Vu brute force, math, sortings	1100	x18473
1889A	Qingshan Loves Strings 2 constructive algorithms, greedy, implementation	1300	x13377
1886B	Fear of the Dark binary search, geometry, math	1200	x16357
1884B	Haunted House binary search, greedy, math, two pointers	1100	x12821
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x15627
1881D	Divide and Equalize math, number theory	1300	x17813
1881C	Perfect Square brute force, implementation	1200	x17257
1879C	Make it Alternating combinatorics, dp, greedy	1300	x17411
1877C	Joyboard math, number theory	1200	x11167
1874A	Jellyfish and Game brute force, games, greedy, implementation	1200	x17271
1873F	Money Trees binary search, greedy, math, two pointers	1300	x15941
1873E	Building an Aquarium binary search, sortings	1100	x27651
1872D	Plus Minus Permutation math	1200	x24695
1872C	Non-coprime Split math, number theory	1100	x23669
1870C	Colorful Table binary search, data structures, dp, implementation, math, two pointers	1300	x11646
1870B	Friendly Arrays bitmasks, greedy, math	1200	x14325
1869B	2D Traveling geometry, math, shortest paths, sortings	1100	x16531
1868A	Fill in the Matrix constructive algorithms, implementation	1300	x12145
1867C	Salyg1n and the MEX Game constructive algorithms, data structures, games, greedy, interactive	1300	x11389
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x16887
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x13667
1864B	Swap and Reverse constructive algorithms, greedy, sortings, strings	1100	x15480
1863C	MEX Repetition implementation, math	1100	x14152
1863B	Split Sort greedy, math, sortings	1100	x15409
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x17436
1862C	Flower City Fence binary search, data structures, implementation, sortings	1100	x21035
1860B	Fancy Coins binary search, brute force, greedy, math	1200	x17119
1859C	Another Permutation Problem brute force, dp, greedy, math	1200	x17146
1857D	Strong Vertices math, sortings, trees	1300	x20016
1857C	Assembly via Minimums greedy, sortings	1200	x26858
1857B	Maximum Rounding greedy, implementation, math	1100	x23212
1853B	Fibonaccharsis binary search, brute force, math	1200	x17591
1851D	Prefix Permutation Sums implementation, math	1300	x15419
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x19651
1850E	Cardboard for Pictures binary search, geometry, implementation, math	1100	x23884
1848B	Vika and the Bridge binary search, data structures, greedy, implementation, math, sortings	1200	x15505
1846E1	Rudolf and Snowflakes (simple version) brute force, implementation, math	1300	x17268
1846D	Rudolph and Christmas Tree constructive algorithms, geometry, math	1200	x19696
1846C	Rudolf and the Another Competition constructive algorithms, data structures, dp, greedy, sortings	1200	x19321
1844C	Particles dp, greedy, implementation, math	1300	x15911
1843D	Apple Tree combinatorics, dfs and similar, dp, math, trees	1200	x18332
1842B	Tenzing and Books bitmasks, greedy, math	1100	x17436
1840B	Binary Cafe bitmasks, combinatorics, math	1100	x22623
1839C	Insert Zero and Invert Prefix constructive algorithms	1300	x12105
1839B	Lamps greedy, sortings	1100	x15251
1838B	Minimize Permutation Subarrays constructive algorithms, math	1100	x16538
1836B	Astrophysicists greedy, math	1100	x12714
1834C	Game with Reversing games, greedy, math, strings	1200	x13462
1832C	Contrast Value greedy, implementation	1200	x21429
1832B	Maximum Sum brute force, sortings, two pointers	1100	x22671
1829F	Forever Winter dfs and similar, graphs, math	1300	x17987
1829E	The Lakes dfs and similar, dsu, graphs, implementation	1100	x20444
1827A	Counting Orders combinatorics, math, sortings, two pointers	1100	x19439
1826C	Dreaming of Freedom greedy, math, number theory	1300	x13766
1826B	Lunatic Never Content math, number theory	1100	x18154
1826A	Trust Nobody brute force, greedy, implementation, sortings	1200	x15403
1823C	Strongly Composite greedy, math, number theory	1300	x12434
1822D	Super-Permutation constructive algorithms, math	1200	x16952
1821C	Tear It Apart brute force, implementation, math, strings	1300	x14481
1821B	Sort the Subarray brute force, greedy	1100	x19012
1820B	JoJo's Incredible Adventures math, strings, two pointers	1100	x15089
1819A	Constructive Problem brute force, greedy	1300	x12898
1815A	Ian and Array Sorting greedy, math	1300	x14296
1811C	Restore the Array constructive algorithms, greedy	1100	x20115
1810C	Make It Permutation brute force, greedy, sortings	1300	x14713
1808B	Playing in a Casino math, sortings	1200	x17497
1807G2	Subsequence Addition (Hard Version) bitmasks, dp, greedy, implementation, sortings	1100	x19756
1807G1	Subsequence Addition (Easy Version) brute force, data structures, dp, greedy, implementation, sortings	1100	x19328
1807E	Interview binary search, implementation, interactive	1300	x13267
1800D	Remove Two Letters data structures, greedy, hashing, strings	1200	x24131
1800C2	Powering the Hero (hard version) data structures, greedy	1100	x22977
1799B	Equalize by Divide brute force, constructive algorithms, greedy, math	1200	x11465
1797B	Li Hua and Pattern constructive algorithms, greedy	1100	x16389
1794C	Scoring Subsequences binary search, greedy, math, two pointers	1300	x14158
1793C	Dora and Search constructive algorithms, data structures, two pointers	1200	x21062
1793B	Fedya and Array constructive algorithms, math	1100	x15933
1792B	Stand-up Comedian greedy, math	1200	x21627
1791G1	Teleporters (Easy Version) greedy, sortings	1100	x23312
1791E	Negatives and Positives dp, greedy, sortings	1100	x29205
1790D	Matryoshkas data structures, greedy, sortings	1200	x20802
1788C	Matching Numbers constructive algorithms, greedy, math	1300	x17468
1788B	Sum of Two Numbers constructive algorithms, greedy, implementation, math, probabilities	1100	x20237