Problemset - Codeforces

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

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Problems

#	Name
2041E	Beautiful Array constructive algorithms	1200	x1444
2039H2	Cool Swap Walk (Hard Version) constructive algorithms, constructive algorithms, constructive algorithms, implementation, implementation, sortings, sortings	3500	x17
2039H1	Cool Swap Walk (Easy Version) constructive algorithms, implementation, sortings	3500	x31
2039D	Shohag Loves GCD constructive algorithms, greedy, math, number theory	1700	x3372
2039B	Shohag Loves Strings constructive algorithms, greedy, implementation, strings	1000	x8648
2039A	Shohag Loves Mod constructive algorithms, number theory	800	x10816
2038G	Guess One Character constructive algorithms, implementation, interactive	1900	x1615
2037C	Superultra's Favorite Permutation constructive algorithms, greedy, math, number theory	1000	x15170
2036G	Library of Magic binary search, constructive algorithms, divide and conquer, interactive, math, number theory	2200	x1075
2036E	Reverse the Rivers binary search, constructive algorithms, data structures, greedy	1600	x6439
2035H	Peak Productivity Forces constructive algorithms	3500	x58
2035E	Monster binary search, brute force, constructive algorithms, greedy, implementation, math, ternary search	2300	x1514
2035C	Alya and Permutation bitmasks, constructive algorithms, math	1400	x7963
2035B	Everyone Loves Tres constructive algorithms, greedy, math, number theory	900	x14640
2033B	Sakurako and Water brute force, constructive algorithms, greedy	900	x22894
2033A	Sakurako and Kosuke constructive algorithms, implementation, math	800	x32827
2032E	Balanced constructive algorithms, data structures, greedy, implementation, math	2400	x950
2032D	Genokraken constructive algorithms, data structures, graphs, greedy, implementation, interactive, trees, two pointers	1800	x4539
2032B	Medians constructive algorithms, greedy, implementation, math	1100	x15506
2031F	Penchick and Even Medians binary search, constructive algorithms, interactive, probabilities	2800	x249
2031C	Penchick and BBQ Buns constructive algorithms, math, number theory	1300	x9306
2031A	Penchick and Modern Monument constructive algorithms, dp, greedy, math	800	x14696
2030B	Minimise Oneness combinatorics, constructive algorithms, games, math	800	x20035
2030A	A Gift From Orangutan constructive algorithms, greedy, math, sortings	800	x23388
2029F	Palindrome Everywhere constructive algorithms, graphs, greedy	2500	x616
2029E	Common Generator brute force, constructive algorithms, math, number theory	2100	x2392
2029D	Cool Graph constructive algorithms, data structures, dfs and similar, dsu, graphs, greedy, trees	1900	x2637
2029B	Replacement constructive algorithms, games, strings	1100	x8204
2028D	Alice's Adventures in Cards constructive algorithms, data structures, dp, graphs, greedy, implementation, ternary search	2000	x2334
2026C	Action Figures binary search, brute force, constructive algorithms, data structures, greedy, implementation	1500	x8601
2026B	Black Cells binary search, brute force, constructive algorithms, greedy	1300	x11722
2026A	Perpendicular Segments constructive algorithms, geometry, greedy, math	900	x15892
2025F	Choose Your Queries constructive algorithms, dfs and similar, dp, graphs, greedy, trees	2700	x687
2024B	Buying Lemonade binary search, constructive algorithms, sortings	1100	x13102
2023C	C+K+S constructive algorithms, dfs and similar, graphs, greedy, hashing, implementation, strings	2400	x951
2023A	Concatenation of Arrays constructive algorithms, greedy, math, sortings	1300	x11968
2022E1	Billetes MX (Easy Version) 2-sat, binary search, combinatorics, constructive algorithms, dfs and similar, dsu, graphs	2500	x417
2022D2	Asesino (Hard Version) constructive algorithms, dp, interactive	2700	x510
2022D1	Asesino (Easy Version) binary search, brute force, constructive algorithms, implementation, interactive	1900	x2816
2022A	Bus to Pénjamo constructive algorithms, greedy, implementation, math	800	x13736
2021C2	Adjust The Presentation (Hard Version) constructive algorithms, data structures, greedy, implementation, sortings	1900	x3561
2021C1	Adjust The Presentation (Easy Version) constructive algorithms, greedy	1300	x11398
2013C	Password Cracking constructive algorithms, interactive, strings	1400	x11621
2013B	Battle for Survive constructive algorithms, greedy, math	900	x22957
2013A	Zhan's Blender constructive algorithms, math	800	x27099
2008A	Sakurako's Exam brute force, constructive algorithms, greedy, math	800	x35200
2006F	Dora's Paint brute force, combinatorics, constructive algorithms, graphs, implementation	3500	x118
2006A	Iris and Game on the Tree constructive algorithms, dfs and similar, games, graphs, greedy, trees	1700	x6763
2005A	Simple Palindrome combinatorics, constructive algorithms, greedy, math	900	x21659
2003C	Turtle and Good Pairs constructive algorithms, greedy, sortings, strings	1200	x18136
2002B	Removals Game constructive algorithms, games	1000	x18867
2002A	Distanced Coloring constructive algorithms, implementation, math	800	x19460
2001D	Longest Max Min Subsequence brute force, constructive algorithms, data structures, greedy, implementation	1900	x5039
2001B	Generate Permutation constructive algorithms	800	x24020
1999B	Card Game brute force, constructive algorithms, implementation	1000	x32494
1998C	Perform Operations to Maximize Score binary search, brute force, constructive algorithms, greedy, implementation	1900	x6135
1998B	Minimize Equal Sum Subarrays constructive algorithms, math, number theory	1000	x23834
1998A	Find K Distinct Points with Fixed Center constructive algorithms, implementation, math	800	x23964
1997C	Even Positions constructive algorithms, data structures, greedy	1100	x22043
1997B	Make Three Regions constructive algorithms, two pointers	1100	x20659
1995C	Squaring brute force, constructive algorithms, greedy, implementation, math, number theory	1800	x8599
1994H	Fortnite combinatorics, constructive algorithms, games, greedy, hashing, interactive, math, number theory, strings	3500	x706
1994F	Stardew Valley constructive algorithms, dfs and similar, graphs, trees	2500	x1213
1994D	Funny Game constructive algorithms, dsu, graphs, greedy, math, number theory, trees	1900	x5786
1994B	Fun Game bitmasks, constructive algorithms, greedy, math	1100	x16582
1994A	Diverse Game constructive algorithms, greedy, implementation	800	x20269
1993F1	Dyn-scripted Robot (Easy Version) brute force, chinese remainder theorem, constructive algorithms, math, number theory	2400	x1003
1993E	Xor-Grid Problem bitmasks, constructive algorithms, dp, implementation	2700	x545
1993B	Parity and Sum constructive algorithms, greedy	1100	x22784
1992E	Novice's Mistake brute force, constructive algorithms, implementation, math, strings	1700	x9182
1992C	Gorilla and Permutation constructive algorithms, math	900	x29178
1992A	Only Pluses brute force, constructive algorithms, greedy, math, sortings	800	x41431
1991I	Grid Game constructive algorithms, games, graph matchings, greedy, interactive	3500	x130
1991G	Grid Reset constructive algorithms, greedy, implementation	2700	x612
1991E	Coloring Game constructive algorithms, dfs and similar, games, graphs, greedy, interactive	1900	x4233
1991D	Prime XOR Coloring bitmasks, constructive algorithms, graphs, greedy, math, number theory	1900	x6687
1991C	Absolute Zero constructive algorithms, greedy, math	1300	x14634
1991B	AND Reconstruction bitmasks, constructive algorithms, greedy	1100	x16409
1990B	Array Craft constructive algorithms, greedy	1200	x16565
1988C	Increasing Sequence with Fixed OR bitmasks, constructive algorithms, greedy	1300	x16634
1984G	Magic Trick II constructive algorithms, implementation, sortings	3200	x260
1984A	Strange Splitting constructive algorithms	800	x21197
1983D	Swap Dilemma constructive algorithms, data structures, divide and conquer, greedy, math, sortings	1700	x8256
1983B	Corner Twist constructive algorithms, greedy, implementation, math	1200	x16162
1983A	Array Divisibility constructive algorithms, math	800	x25729
1981D	Turtle and Multiplication constructive algorithms, dfs and similar, graphs, number theory	2400	x1682
1981C	Turtle and an Incomplete Sequence bitmasks, brute force, constructive algorithms, greedy, implementation, math	1800	x5375
1980E	Permutation of Rows and Columns constructive algorithms, data structures, greedy, hashing, implementation, math, matrices, sortings	1600	x10578
1980C	Sofia and the Lost Operations constructive algorithms, greedy	1300	x18674
1979F	Kostyanych's Theorem brute force, constructive algorithms, graphs, interactive	2900	x316
1979E	Manhattan Triangle binary search, constructive algorithms, data structures, geometry, implementation, two pointers	2400	x1457
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x6670
1979C	Earning on Bets binary search, combinatorics, constructive algorithms, number theory	1200	x18851
1978C	Manhattan Permutations constructive algorithms, data structures, greedy, implementation, math	1300	x15021
1978A	Alice and Books constructive algorithms, greedy, sortings	800	x25800
1977E	Tensor constructive algorithms, graphs, interactive	2600	x690
1977B	Binary Colouring bitmasks, constructive algorithms, greedy, math	1100	x17700
1974D	Ingenuity-2 constructive algorithms, greedy, implementation	1400	x14883
1973C	Cat, Fox and Double Maximum constructive algorithms, greedy, implementation, math, sortings	1700	x8413
1970D2	Arithmancy (Medium) constructive algorithms, interactive, probabilities, strings	2600	x209

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