Problemset - Codeforces

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Codeforces Round (Div. 2)
46:07:56
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Difficulty: —

constructive algorithms

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Problems

#	Name
1721F	Matching Reduction brute force, constructive algorithms, dfs and similar, flows, graph matchings, graphs, interactive	2800	x383
1720E	Misha and Paintings constructive algorithms, data structures, greedy, implementation, math	2700	x752
1719B	Mathematical Circus constructive algorithms, math	800	x18396
1718E	Impressionism constructive algorithms, graphs, implementation, math	3500	x105
1717F	Madoka and The First Session constructive algorithms, flows, graph matchings, graphs, implementation	2500	x523
1717D	Madoka and The Corruption Scheme combinatorics, constructive algorithms, greedy, math	1900	x4330
1717B	Madoka and Underground Competitions constructive algorithms, implementation	1100	x14601
1716B	Permutation Chain constructive algorithms, math	800	x21312
1715F	Crop Squares constructive algorithms, geometry, interactive, math	2700	x511
1715B	Beautiful Array constructive algorithms, greedy, math	1000	x20932
1715A	Crossmarket constructive algorithms, greedy, math	800	x23352
1714F	Build a Tree and That Is It constructive algorithms, implementation, trees	1900	x3147
1713F	Lost Array bitmasks, combinatorics, constructive algorithms, dp, math	2900	x522
1713D	Tournament Countdown constructive algorithms, greedy, interactive, number theory, probabilities	1800	x5562
1713C	Build Permutation constructive algorithms, dp, math	1200	x17068
1713B	Optimal Reduction constructive algorithms, sortings	1000	x20969
1712D	Empty Graph binary search, constructive algorithms, data structures, greedy, shortest paths	2000	x4382
1712B	Woeful Permutation constructive algorithms, greedy, number theory	800	x21415
1711A	Perfect Permutation constructive algorithms	800	x24970
1710D	Recover the Tree constructive algorithms, trees	3400	x415
1710C	XOR Triangle bitmasks, brute force, constructive algorithms, dp, greedy, math	2500	x1305
1710A	Color the Picture constructive algorithms, greedy, math	1500	x10750
1709C	Recover an RBS constructive algorithms, greedy, implementation, strings	1800	x8675
1708B	Difference of GCDs constructive algorithms, math	1100	x20119
1707F	Bugaboo bitmasks, constructive algorithms, dp, number theory	3500	x147
1707A	Doremy's IQ binary search, constructive algorithms, greedy, implementation	1600	x13222
1706D2	Chopping Carrots (Hard Version) brute force, constructive algorithms, data structures, dp, greedy, math, number theory, two pointers	2400	x1674
1706D1	Chopping Carrots (Easy Version) binary search, brute force, constructive algorithms, greedy, number theory	1700	x6800
1706A	Another String Minimization Problem 2-sat, constructive algorithms, greedy, string suffix structures, strings	800	x22713
1705F	Mark and the Online Exam bitmasks, constructive algorithms, interactive, probabilities	2900	x589
1705D	Mark and Lightbulbs combinatorics, constructive algorithms, greedy, math, sortings	1800	x6219
1705B	Mark the Dust Sweeper constructive algorithms, greedy, implementation	900	x22537
1704H1	Game of AI (easy version) combinatorics, constructive algorithms, dp, fft, math	3200	x177
1704G	Mio and Lucky Array constructive algorithms, fft, math, strings	3500	x99
1704F	Colouring Game constructive algorithms, dp, games	2600	x949
1704E	Count Seconds brute force, constructive algorithms, dp, graphs, implementation, math	2200	x2257
1704D	Magical Array constructive algorithms, hashing, implementation, math	1900	x4952
1704A	Two 0-1 Sequences constructive algorithms, greedy	800	x15898
1702F	Equate Multisets constructive algorithms, data structures, greedy, math, number theory	1700	x8182
1702A	Round Down the Price constructive algorithms	800	x34137
1700F	Puzzle constructive algorithms, dp, greedy	2600	x869
1700E	Serega the Pirate brute force, constructive algorithms	2600	x838
1700C	Helping the Nature constructive algorithms, data structures, greedy	1700	x10720
1700B	Palindromic Numbers constructive algorithms, implementation, math	1100	x18533
1700A	Optimal Path constructive algorithms, greedy, math	800	x22720
1699C	The Third Problem combinatorics, constructive algorithms, math	1700	x9593
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x19432
1699A	The Third Three Number Problem constructive algorithms, math	800	x23809
1698F	Equal Reversal constructive algorithms, graphs, implementation, math	2800	x607
1698D	Fixed Point Guessing binary search, constructive algorithms, interactive	1600	x8956
1698B	Rising Sand constructive algorithms, greedy, implementation	800	x20819
1697F	Too Many Constraints 2-sat, constructive algorithms, graphs, implementation	2800	x547
1697E	Coloring brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math	2400	x1159
1697D	Guess The String binary search, constructive algorithms, interactive	1900	x4349
1697C	awoo's Favorite Problem binary search, constructive algorithms, data structures, greedy, implementation, strings, two pointers	1400	x14141
1696F	Tree Recovery brute force, constructive algorithms, dfs and similar, dsu, graphs, trees	2600	x862
1696D	Permutation Graph binary search, constructive algorithms, data structures, divide and conquer, greedy, shortest paths	1900	x5295
1696C	Fishingprince Plays With Array constructive algorithms, greedy, implementation, math	1400	x11463
1695E	Ambiguous Dominoes constructive algorithms, dfs and similar, graphs	2700	x439
1695D2	Tree Queries (Hard Version) constructive algorithms, dfs and similar, dp, greedy, trees	2300	x1949
1695D1	Tree Queries (Easy Version) brute force, constructive algorithms, dfs and similar, dp, greedy, trees	2200	x2127
1694B	Paranoid String constructive algorithms, greedy	1200	x18836
1691D	Max GEQ Sum binary search, constructive algorithms, data structures, divide and conquer, implementation, two pointers	1800	x5667
1691C	Sum of Substrings brute force, constructive algorithms, greedy, math, strings	1400	x15347
1691B	Shoe Shuffling constructive algorithms, greedy, implementation, two pointers	1000	x22123
1690A	Print a Pedestal (Codeforces logo?) constructive algorithms, greedy	800	x32985
1689E	ANDfinity bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs	2500	x1181
1688C	Manipulating History constructive algorithms, greedy, strings	1700	x8039
1688B	Patchouli's Magical Talisman bitmasks, constructive algorithms, greedy, sortings	800	x18059
1687E	Become Big For Me combinatorics, constructive algorithms, greedy, math, number theory	3500	x222
1687B	Railway System constructive algorithms, graphs, greedy, interactive, sortings	1700	x3547
1685D2	Permutation Weight (Hard Version) constructive algorithms, greedy	3500	x105
1685D1	Permutation Weight (Easy Version) constructive algorithms, dfs and similar, dsu	2800	x435
1685C	Bring Balance brute force, constructive algorithms, greedy	2600	x955
1685A	Circular Local MiniMax constructive algorithms, greedy, sortings	1100	x16763
1684H	Hard Cut constructive algorithms, dfs and similar, divide and conquer, math	3400	x236
1684G	Euclid Guess constructive algorithms, flows, graph matchings, math, number theory	2800	x596
1684E	MEX vs DIFF binary search, brute force, constructive algorithms, data structures, greedy, two pointers	2100	x3099
1684D	Traps constructive algorithms, greedy, sortings	1700	x9482
1684C	Column Swapping brute force, constructive algorithms, greedy, implementation, sortings	1400	x12173
1684B	Z mod X = C constructive algorithms, math	800	x20832
1684A	Digit Minimization constructive algorithms, games, math, strings	800	x23689
1682E	Unordered Swaps constructive algorithms, dfs and similar, graphs, greedy, math, sortings, trees	2700	x575
1682D	Circular Spanning Tree constructive algorithms, implementation, trees	2000	x3240
1682C	LIS or Reverse LIS? constructive algorithms, greedy, implementation, math	1400	x14449
1682B	AND Sorting bitmasks, constructive algorithms, sortings	1100	x17919
1677C	Tokitsukaze and Two Colorful Tapes constructive algorithms, dfs and similar, graphs, greedy	1900	x3498
1674E	Breaking the Wall binary search, brute force, constructive algorithms, greedy, math	2000	x6271
1674D	A-B-C Sort constructive algorithms, implementation, sortings	1200	x16047
1674A	Number Transformation constructive algorithms, math	800	x25999
1673F	Anti-Theft Road Planning bitmasks, constructive algorithms, divide and conquer, greedy, interactive, math	2400	x789
1672H	Zigu Zagu constructive algorithms, data structures, greedy	2700	x935
1672G	Cross Xor constructive algorithms, graphs, math, matrices	3200	x319
1672F2	Checker for Array Shuffling constructive algorithms, dfs and similar, graphs	2800	x785
1672F1	Array Shuffling constructive algorithms, graphs, greedy	2000	x3032
1672E	notepad.exe binary search, constructive algorithms, greedy, interactive	2200	x2118
1672D	Cyclic Rotation constructive algorithms, greedy, implementation, two pointers	1700	x6141
1672C	Unequal Array constructive algorithms, greedy, implementation	1100	x13098
1672B	I love AAAB constructive algorithms, implementation	800	x15715
1671D	Insert a Progression brute force, constructive algorithms, greedy	1600	x7511