Problemset - Codeforces

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

#	Name
1847A	The Man who became a God greedy, sortings	800	x22082
1846G	Rudolf and CodeVid-23 bitmasks, dp, graphs, greedy, shortest paths	1900	x4485
1846F	Rudolph and Mimic constructive algorithms, implementation, interactive	1800	x3171
1846E2	Rudolf and Snowflakes (hard version) binary search, brute force, implementation, math	1800	x7127
1846E1	Rudolf and Snowflakes (simple version) brute force, implementation, math	1300	x17288
1846D	Rudolph and Christmas Tree constructive algorithms, geometry, math	1200	x19723
1846C	Rudolf and the Another Competition constructive algorithms, data structures, dp, greedy, sortings	1200	x19334
1846B	Rudolph and Tic-Tac-Toe brute force, implementation, strings	800	x27033
1846A	Rudolph and Cut the Rope implementation, math	800	x32646
1845F	Swimmers in the Pool dp, fft, math, number theory	2800	x373
1845E	Boxes and Balls dp, implementation, math	2500	x1362
1845D	Rating System binary search, brute force, data structures, dp, dsu, greedy, math, two pointers	1800	x7944
1845C	Strong Password binary search, dp, greedy, strings	1400	x14478
1845B	Come Together geometry, implementation, math	900	x21779
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x28416
1844H	Multiple of Three Cycles combinatorics, data structures, dp, dsu, math	3400	x141
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x829
1844F2	Min Cost Permutation (Hard Version) binary search, constructive algorithms, data structures, greedy, math, sortings	2800	x405
1844F1	Min Cost Permutation (Easy Version) brute force, constructive algorithms, greedy, math	2600	x791
1844E	Great Grids 2-sat, constructive algorithms, dfs and similar, dsu, graphs	2400	x1904
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x12423
1844C	Particles dp, greedy, implementation, math	1300	x15935
1844B	Permutations & Primes constructive algorithms, math	1000	x18361
1844A	Subtraction Game constructive algorithms, games	800	x24706
1843F2	Omsk Metro (hard version) data structures, dfs and similar, divide and conquer, dp, math, trees	2300	x1657
1843F1	Omsk Metro (simple version) data structures, dfs and similar, dp, graphs, greedy, math, trees	1800	x5399
1843E	Tracking Segments binary search, brute force, data structures, two pointers	1600	x12666
1843D	Apple Tree combinatorics, dfs and similar, dp, math, trees	1200	x18343
1843C	Sum in Binary Tree bitmasks, combinatorics, math, trees	800	x33750
1843B	Long Long greedy, math, two pointers	800	x29334
1843A	Sasha and Array Coloring greedy, sortings, two pointers	800	x34517
1842I	Tenzing and Necklace divide and conquer, dp, greedy	3500	x121
1842H	Tenzing and Random Real Numbers bitmasks, dp, graphs, math, probabilities	3000	x711
1842G	Tenzing and Random Operations combinatorics, dp, math, probabilities	2800	x1085
1842F	Tenzing and Tree dfs and similar, greedy, shortest paths, sortings, trees	2500	x1359
1842E	Tenzing and Triangle data structures, dp, geometry, greedy, math	2300	x1640
1842D	Tenzing and His Animal Friends constructive algorithms, graphs, greedy	1900	x4138
1842C	Tenzing and Balls dp	1500	x13093
1842B	Tenzing and Books bitmasks, greedy, math	1100	x17455
1842A	Tenzing and Tsondu games, math	800	x19927
1841F	Monocarp and a Strategic Game geometry, sortings, two pointers	2700	x505
1841E	Fill the Matrix data structures, greedy, math	2200	x2054
1841D	Pairs of Segments data structures, greedy, sortings, two pointers	2000	x4491
1841C	Ranom Numbers brute force, dp, greedy, math, strings	1800	x7932
1841B	Keep it Beautiful implementation	1000	x21661
1841A	Game with Board constructive algorithms, games	800	x24814
1840G2	In Search of Truth (Hard Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2500	x995
1840G1	In Search of Truth (Easy Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2200	x2417
1840F	Railguns brute force, dfs and similar, dp, graphs	2200	x1850
1840E	Character Blocking data structures, hashing, implementation	1600	x8161
1840D	Wooden Toy Festival binary search, greedy, sortings	1400	x13943
1840C	Ski Resort combinatorics, math, two pointers	1000	x28674
1840B	Binary Cafe bitmasks, combinatorics, math	1100	x22631
1840A	Cipher Shifer implementation, strings, two pointers	800	x34432
1839E	Decreasing Game constructive algorithms, dfs and similar, dp, greedy, interactive	2400	x1243
1839D	Ball Sorting data structures, dp, sortings	2100	x2371
1839C	Insert Zero and Invert Prefix constructive algorithms	1300	x12110
1839B	Lamps greedy, sortings	1100	x15257
1839A	The Good Array greedy, implementation, math	800	x17553
1838F	Stuck Conveyor binary search, constructive algorithms, interactive	3000	x320
1838E	Count Supersequences combinatorics, dp, math	2500	x1509
1838D	Bracket Walk data structures, greedy, strings	2100	x3305
1838C	No Prime Differences constructive algorithms, math, number theory	1400	x14736
1838B	Minimize Permutation Subarrays constructive algorithms, math	1100	x16545
1838A	Blackboard List constructive algorithms, math	800	x21635
1837F	Editorial for Two binary search, data structures, greedy, implementation	2400	x2240
1837E	Playoff Fixing combinatorics, trees	2200	x2221
1837D	Bracket Coloring constructive algorithms, greedy	1400	x15169
1837C	Best Binary String constructive algorithms, greedy	1000	x22243
1837B	Comparison String greedy	900	x30752
1837A	Grasshopper on a Line constructive algorithms, math	800	x33571
1836B	Astrophysicists greedy, math	1100	x12720
1836A	Destroyer implementation, sortings	800	x20434
1835F	Good Graph bitmasks, dfs and similar, graph matchings, graphs, implementation	3500	x167
1835E	Old Mobile combinatorics, dp, probabilities	3500	x232
1835D	Doctor's Brown Hypothesis dfs and similar, graphs, math, number theory	2900	x513
1835C	Twin Clusters bitmasks, brute force, constructive algorithms, math, probabilities	2600	x1013
1835B	Lottery binary search, brute force, greedy, math, two pointers	2500	x956
1835A	k-th equality brute force, implementation, math	1700	x7915
1834F	Typewriter brute force, math	2500	x532
1834E	MEX of LCM binary search, data structures, implementation, math, number theory	2300	x2310
1834D	Survey in Class brute force, data structures, greedy, implementation, sortings	1900	x4762
1834C	Game with Reversing games, greedy, math, strings	1200	x13469
1834B	Maximum Strength greedy, math	1000	x15407
1834A	Unit Array greedy, math	800	x25393
1833G	Ksyusha and Chinchilla constructive algorithms, dfs and similar, dp, dsu, greedy, implementation, trees	1800	x5480
1833F	Ira and Flamenco combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers	1700	x7538
1833E	Round Dance dfs and similar, dsu, graphs, shortest paths	1600	x12143
1833D	Flipper brute force, constructive algorithms, greedy	1400	x13482
1833C	Vlad Building Beautiful Array greedy, math	800	x26275
1833B	Restore the Weather greedy, sortings	900	x26858
1833A	Musical Puzzle implementation, strings	800	x32863
1832F	Zombies binary search, dp	3200	x279
1832E	Combinatorics Problem brute force, combinatorics, dp	2200	x2206
1832D2	Red-Blue Operations (Hard Version) binary search, constructive algorithms, greedy, implementation, math	2400	x1932
1832D1	Red-Blue Operations (Easy Version) binary search, greedy, implementation, math	2100	x2988
1832C	Contrast Value greedy, implementation	1200	x21464
1832B	Maximum Sum brute force, sortings, two pointers	1100	x22699
1832A	New Palindrome strings	800	x25962
1831B	Array merging constructive algorithms, greedy	1000	x21500