Problemset - Codeforces

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Codeforces Round 950 (Div. 3)
34:13:45
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constructive algorithms

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Problems

#	Name
1707F	Bugaboo bitmasks, constructive algorithms, dp, number theory	3500	x146
1707A	Doremy's IQ binary search, constructive algorithms, greedy, implementation	1600	x12956
1706D2	Chopping Carrots (Hard Version) brute force, constructive algorithms, data structures, dp, greedy, math, number theory, two pointers	2400	x1660
1706D1	Chopping Carrots (Easy Version) binary search, brute force, constructive algorithms, greedy, number theory	1700	x6720
1706A	Another String Minimization Problem 2-sat, constructive algorithms, greedy, string suffix structures, strings	800	x22615
1705F	Mark and the Online Exam bitmasks, constructive algorithms, interactive, probabilities	2900	x577
1705D	Mark and Lightbulbs combinatorics, constructive algorithms, greedy, math, sortings	1800	x6130
1705B	Mark the Dust Sweeper constructive algorithms, greedy, implementation	900	x22272
1704H1	Game of AI (easy version) combinatorics, constructive algorithms, dp, fft, math	3200	x172
1704G	Mio and Lucky Array constructive algorithms, fft, math, strings	3500	x99
1704F	Colouring Game constructive algorithms, dp, games	2600	x940
1704E	Count Seconds brute force, constructive algorithms, dp, graphs, implementation, math	2200	x2240
1704D	Magical Array constructive algorithms, hashing, implementation, math	1900	x4884
1704A	Two 0-1 Sequences constructive algorithms, greedy	800	x15831
1702F	Equate Multisets constructive algorithms, data structures, greedy, math, number theory	1700	x8007
1702A	Round Down the Price constructive algorithms	800	x33638
1700F	Puzzle constructive algorithms, dp, greedy	2600	x855
1700E	Serega the Pirate brute force, constructive algorithms	2600	x830
1700C	Helping the Nature constructive algorithms, data structures, greedy	1700	x10521
1700B	Palindromic Numbers constructive algorithms, implementation, math	1100	x18319
1700A	Optimal Path constructive algorithms, greedy, math	800	x22596
1699C	The Third Problem combinatorics, constructive algorithms, math	1700	x9457
1699B	Almost Ternary Matrix bitmasks, constructive algorithms, matrices	900	x19238
1699A	The Third Three Number Problem constructive algorithms, math	800	x23685
1698F	Equal Reversal constructive algorithms, graphs, implementation, math	2800	x593
1698D	Fixed Point Guessing binary search, constructive algorithms, interactive	1600	x8763
1698B	Rising Sand constructive algorithms, greedy, implementation	800	x20677
1697F	Too Many Constraints 2-sat, constructive algorithms, graphs, implementation	2800	x519
1697E	Coloring brute force, combinatorics, constructive algorithms, dp, geometry, graphs, greedy, implementation, math	2400	x1145
1697D	Guess The String binary search, constructive algorithms, interactive	1900	x4298
1697C	awoo's Favorite Problem binary search, constructive algorithms, data structures, greedy, implementation, strings, two pointers	1400	x14012
1696F	Tree Recovery brute force, constructive algorithms, dfs and similar, dsu, graphs, trees	2600	x851
1696D	Permutation Graph binary search, constructive algorithms, data structures, divide and conquer, greedy, shortest paths	1900	x5218
1696C	Fishingprince Plays With Array constructive algorithms, greedy, implementation, math	1400	x11338
1695E	Ambiguous Dominoes constructive algorithms, dfs and similar, graphs	2700	x426
1695D2	Tree Queries (Hard Version) constructive algorithms, dfs and similar, dp, greedy, trees	2300	x1930
1695D1	Tree Queries (Easy Version) brute force, constructive algorithms, dfs and similar, dp, greedy, trees	2200	x2100
1694B	Paranoid String constructive algorithms, greedy	1200	x18616
1691D	Max GEQ Sum binary search, constructive algorithms, data structures, divide and conquer, implementation, two pointers	1800	x5533
1691C	Sum of Substrings brute force, constructive algorithms, greedy, math, strings	1400	x15177
1691B	Shoe Shuffling constructive algorithms, greedy, implementation, two pointers	1000	x21531
1690A	Print a Pedestal (Codeforces logo?) constructive algorithms, greedy	800	x32684
1689E	ANDfinity bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs	2500	x1155
1688C	Manipulating History constructive algorithms, greedy, strings	1700	x7945
1688B	Patchouli's Magical Talisman bitmasks, constructive algorithms, greedy, sortings	800	x17916
1687E	Become Big For Me combinatorics, constructive algorithms, greedy, math, number theory	3500	x219
1687B	Railway System constructive algorithms, graphs, greedy, interactive, sortings	1700	x3501
1685D2	Permutation Weight (Hard Version) constructive algorithms, greedy	3500	x105
1685D1	Permutation Weight (Easy Version) constructive algorithms, dfs and similar, dsu	2800	x427
1685C	Bring Balance brute force, constructive algorithms, greedy	2600	x934
1685A	Circular Local MiniMax constructive algorithms, greedy, sortings	1100	x16564
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	x582
1684E	MEX vs DIFF binary search, brute force, constructive algorithms, data structures, greedy, two pointers	2100	x3062
1684D	Traps constructive algorithms, greedy, sortings	1700	x9366
1684C	Column Swapping brute force, constructive algorithms, greedy, implementation, sortings	1400	x12070
1684B	Z mod X = C constructive algorithms, math	800	x20670
1684A	Digit Minimization constructive algorithms, games, math, strings	800	x23540
1682E	Unordered Swaps constructive algorithms, dfs and similar, graphs, greedy, math, sortings, trees	2700	x566
1682D	Circular Spanning Tree constructive algorithms, implementation, trees	2000	x3197
1682C	LIS or Reverse LIS? constructive algorithms, greedy, implementation, math	1400	x14218
1682B	AND Sorting bitmasks, constructive algorithms, sortings	1100	x17430
1677C	Tokitsukaze and Two Colorful Tapes constructive algorithms, dfs and similar, graphs, greedy	1900	x3429
1674E	Breaking the Wall binary search, brute force, constructive algorithms, greedy, math	2000	x6199
1674D	A-B-C Sort constructive algorithms, implementation, sortings	1200	x15839
1674A	Number Transformation constructive algorithms, math	800	x25762
1673F	Anti-Theft Road Planning bitmasks, constructive algorithms, divide and conquer, greedy, interactive, math	2400	x776
1672H	Zigu Zagu constructive algorithms, data structures, greedy	2700	x917
1672G	Cross Xor constructive algorithms, graphs, math, matrices	3200	x316
1672F2	Checker for Array Shuffling constructive algorithms, dfs and similar, graphs	2800	x776
1672F1	Array Shuffling constructive algorithms, graphs, greedy	2000	x2984
1672E	notepad.exe binary search, constructive algorithms, greedy, interactive	2200	x2099
1672D	Cyclic Rotation constructive algorithms, greedy, implementation, two pointers	1700	x6019
1672C	Unequal Array constructive algorithms, greedy, implementation	1100	x12967
1672B	I love AAAB constructive algorithms, implementation	800	x15598
1671D	Insert a Progression brute force, constructive algorithms, greedy	1600	x7360
1670E	Hemose on the Tree bitmasks, constructive algorithms, dfs and similar, trees	2200	x1688
1667D	Edge Elimination constructive algorithms, dfs and similar, dp, trees	2900	x645
1667C	Half Queen Cover constructive algorithms, math	2400	x1523
1666J	Job Lookup constructive algorithms, dp, shortest paths, trees	2100	x1295
1666I	Interactive Treasure Hunt brute force, constructive algorithms, geometry, interactive, math	2200	x1387
1666E	Even Split binary search, constructive algorithms, greedy, math	2500	x683
1666C	Connect the Points brute force, constructive algorithms, geometry	1800	x3092
1665D	GCD Guess bitmasks, chinese remainder theorem, constructive algorithms, games, interactive, math, number theory	2000	x3730
1665B	Array Cloning Technique constructive algorithms, greedy, sortings	900	x18943
1665A	GCD vs LCM constructive algorithms, math	800	x23060
1663H	Cross-Language Program *special problem, constructive algorithms		x1266
1663G	Six Characters *special problem, constructive algorithms, strings		x205
1662M	Bottle Arrangements constructive algorithms		x3315
1660E	Matrix and Shifts brute force, constructive algorithms, greedy, implementation	1600	x7022
1659E	AND-MEX Walk bitmasks, brute force, constructive algorithms, dfs and similar, dsu, graphs	2200	x1473
1659D	Reverse Sort Sum constructive algorithms, data structures, greedy, implementation, math, two pointers	1900	x3898
1659B	Bit Flipping bitmasks, constructive algorithms, greedy, strings	1300	x10672
1659A	Red Versus Blue constructive algorithms, greedy, implementation, math	1000	x17192
1658F	Juju and Binary String brute force, constructive algorithms, greedy, math	2700	x728
1658C	Shinju and the Lost Permutation constructive algorithms, math	1700	x9122
1658A	Marin and Photoshoot constructive algorithms, implementation, math	800	x20162
1656I	Neighbour Ordering constructive algorithms, graphs	3500	x98
1656G	Cycle Palindrome constructive algorithms, graphs, math	3200	x274
1656F	Parametric MST binary search, constructive algorithms, graphs, greedy, math, sortings	2600	x999