Problemset - Codeforces

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

#	Name
1778D	Flexible String Revisit combinatorics, dp, math, probabilities	2100	x2833
1778C	Flexible String bitmasks, brute force, strings	1600	x8373
1777F	Comfortably Numb bitmasks, data structures, divide and conquer, strings, trees	2400	x983
1777E	Edge Reverse binary search, dfs and similar, graphs, trees	2200	x1886
1777D	Score of a Tree bitmasks, combinatorics, dfs and similar, dp, math, probabilities, trees	1900	x3564
1777C	Quiz Master binary search, math, number theory, sortings, two pointers	1700	x8767
1776N	Count Permutations math	3500	x83
1776M	Parmigiana With Seafood binary search, dp, greedy, trees	3000	x379
1776K	Uniform Chemistry dp, math	3200	x69
1776J	Italian Data Centers graphs, shortest paths	2500	x704
1776I	Spinach Pizza games, geometry, greedy, interactive	2500	x688
1776G	Another Wine Tasting Event combinatorics, constructive algorithms, math, strings	2100	x2085
1776F	Train Splitting constructive algorithms, graphs, greedy	1700	x3532
1776E	Crossing the Railways data structures, dp	3500	x73
1776D	Teamwork constructive algorithms, greedy, math	2800	x372
1776C	Library game games, greedy, interactive, sortings	2500	x814
1776B	Vittorio Plays with LEGO Bricks dp, geometry	2200	x1363
1775F	Laboratory on Pluto constructive algorithms, dp, greedy, math	2500	x769
1775E	The Human Equation greedy, implementation	2100	x3315
1775D	Friendly Spiders dfs and similar, graphs, math, number theory, shortest paths	1800	x6391
1775C	Interesting Sequence bitmasks, math	1600	x10665
1774H	Maximum Permutation constructive algorithms	3500	x135
1774G	Segment Covering brute force, combinatorics, constructive algorithms, data structures, dp, trees	3200	x444
1774F2	Magician and Pigs (Hard Version) binary search, brute force, data structures, implementation	2700	x717
1774F1	Magician and Pigs (Easy Version) brute force, data structures, implementation	2400	x1088
1774E	Two Chess Pieces dfs and similar, dp, greedy, trees	1900	x3531
1774D	Same Count One brute force, constructive algorithms, greedy, implementation, two pointers	1600	x7988
1773L	Lisa's Sequences dp	3500	x45
1773K	King's Puzzle constructive algorithms	1900	x1448
1773J	Jumbled Trees constructive algorithms, math	2900	x111
1773I	Interactive Factorial Guessing brute force, games, implementation, interactive	2500	x492
1773H	Hot and Cold binary search, interactive	2600	x372
1773G	Game of Questions bitmasks, combinatorics, dp, fft, math, probabilities	2800	x391
1773D	Dominoes combinatorics, flows, graph matchings, greedy	2600	x484
1773C	Cactus Meets Torus	3500	x30
1773B	BinCoin binary search, divide and conquer, hashing, implementation, probabilities, trees	2200	x796
1773A	Amazing Trick constructive algorithms, graph matchings, math, probabilities	1900	x1580
1772G	Gaining Rating binary search, greedy, implementation, math, sortings, two pointers	2200	x1376
1772F	Copy of a Copy of a Copy constructive algorithms, dfs and similar, graphs, implementation, sortings	2000	x2411
1772E	Permutation Game games	1700	x6849
1771F	Hossam and Range Minimum Query binary search, bitmasks, data structures, hashing, probabilities, strings, trees	2500	x1199
1771E	Hossam and a Letter brute force, dp, implementation, two pointers	2500	x712
1771D	Hossam and (sub-)palindromic tree brute force, data structures, dfs and similar, dp, strings, trees	2100	x2814
1771C	Hossam and Trainees greedy, math, number theory	1600	x9830
1770H	Koxia, Mahiru and Winter Festival constructive algorithms	3500	x106
1770G	Koxia and Bracket divide and conquer, fft, math	3400	x159
1770F	Koxia and Sequence bitmasks, combinatorics, dp, math, number theory	3100	x716
1770E	Koxia and Tree combinatorics, dfs and similar, dp, dsu, math, probabilities, trees	2400	x1380
1770D	Koxia and Game constructive algorithms, data structures, dfs and similar, dsu, flows, games, graph matchings, graphs, implementation	2000	x3895
1770C	Koxia and Number Theory brute force, chinese remainder theorem, math, number theory	1700	x8665
1769D3	Игра в Девятку III *special problem, brute force	2300	x119
1769D2	Игра в Девятку II *special problem, brute force	2200	x197
1769D1	Игра в Девятку I *special problem, brute force, dp	1800	x384
1768F	Wonderful Jump dp, greedy	2900	x872
1768E	Partial Sorting combinatorics, math, number theory	2300	x1920
1768D	Lucky Permutation constructive algorithms, dfs and similar, graphs, greedy	1800	x7271
1767F	Two Subtrees data structures, trees	3100	x278
1767E	Algebra Flash bitmasks, brute force, dp, graphs, math, meet-in-the-middle, trees	2500	x963
1767C	Count Binary Strings data structures, dp	2100	x2683
1766F	MCF flows	2800	x276
1766E	Decomposition binary search, brute force, data structures, divide and conquer, dp, two pointers	2300	x1241
1766D	Lucky Chains math, number theory	1600	x9030
1765L	Project Manager brute force, data structures, implementation	2400	x596
1765J	Hero to Zero graph matchings, math	2900	x213
1765I	Infinite Chess implementation, shortest paths	2800	x207
1765H	Hospital Queue binary search, graphs, greedy, implementation	2200	x1320
1765G	Guess the String constructive algorithms, interactive, probabilities	2600	x405
1765F	Chemistry Lab dp, geometry, probabilities	2200	x616
1765D	Watch the Videos binary search, constructive algorithms, two pointers	1700	x4252
1765C	Card Guessing combinatorics, dp, probabilities	2600	x403
1765A	Access Levels bitmasks, dsu, flows, graph matchings	2400	x710
1764H	Doremy's Paint 2 data structures	3400	x197
1764G3	Doremy's Perfect DS Class (Hard Version) binary search, interactive	3300	x475
1764G2	Doremy's Perfect DS Class (Medium Version) binary search, interactive	3000	x538
1764G1	Doremy's Perfect DS Class (Easy Version) binary search, interactive	2900	x595
1764F	Doremy's Experimental Tree brute force, constructive algorithms, dfs and similar, dsu, sortings, trees	2500	x980
1764E	Doremy's Number Line dp, greedy, sortings	2400	x1255
1764D	Doremy's Pegging Game combinatorics, dp, math	2000	x2800
1763F	Edge Queries data structures, dfs and similar, dp, dsu, graphs, trees	3000	x494
1763E	Node Pairs dp, graphs, math, number theory	2200	x1828
1763D	Valid Bitonic Permutations combinatorics, dp, implementation, math, number theory	2200	x2089
1763C	Another Array Problem brute force, constructive algorithms, greedy	2000	x6780
1762G	Unequal Adjacent Elements constructive algorithms, sortings	3100	x102
1762F	Good Pairs binary search, data structures, dp	2600	x684
1762E	Tree Sum combinatorics, math, trees	2600	x684
1762D	GCD Queries constructive algorithms, interactive, number theory	2100	x3699
1761G	Centroid Guess interactive, probabilities, trees	3500	x114
1761F2	Anti-median (Hard Version) combinatorics, dp, math	3500	x83
1761F1	Anti-median (Easy Version) dp, math	3100	x210
1761E	Make It Connected binary search, brute force, constructive algorithms, dsu, graphs, greedy, matrices, trees, two pointers	2400	x1877
1761D	Carry Bit combinatorics, math	2100	x2486
1760G	SlavicG's Favorite Problem bitmasks, dfs and similar, graphs	1700	x7464
1759G	Restore the Permutation binary search, constructive algorithms, data structures, greedy, math	1900	x4538
1759F	All Possible Digits binary search, data structures, greedy, math, number theory	1800	x3973
1758F	Decent Division constructive algorithms, data structures	3000	x179
1758E	Tick, Tock combinatorics, dfs and similar, dsu, graphs	2500	x857
1758D	Range = √Sum binary search, brute force, constructive algorithms, math, two pointers	1800	x7408
1753F	Minecraft Series brute force, two pointers	3500	x213
1753E	N Machines binary search, brute force, greedy	3300	x333
1753D	The Beach constructive algorithms, dfs and similar, graphs, shortest paths	2400	x1782