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Problemset

2,107 problems · filtered by 1 tag

#	Name	Rating↕	Solved↕
1722G	Even-Odd XOR bitmasks constructive algorithms greedy	1500	14.5k
1721F	Matching Reduction brute force constructive algorithms dfs and similar flows graph matchings graphs interactive	2800	641
1720E	Misha and Paintings constructive algorithms data structures greedy implementation math	2700	1k
1719B	Mathematical Circus constructive algorithms math	800	19.2k
1718E	Impressionism constructive algorithms graphs implementation math	3500	228
1717B	Madoka and Underground Competitions constructive algorithms implementation	1100	15.7k
1717D	Madoka and The Corruption Scheme combinatorics constructive algorithms greedy math	1900	4.9k
1717F	Madoka and The First Session constructive algorithms flows graph matchings graphs implementation	2500	788
1716B	Permutation Chain constructive algorithms math	800	22.1k
1715A	Crossmarket constructive algorithms greedy math	800	24.4k
1715B	Beautiful Array constructive algorithms greedy math	1000	35.7k
1715F	Crop Squares constructive algorithms geometry interactive math	2700	603
1714F	Build a Tree and That Is It constructive algorithms implementation trees	1900	3.7k
1713B	Optimal Reduction constructive algorithms sortings	1000	22.8k
1713C	Build Permutation constructive algorithms dp math	1200	19k
1713D	Tournament Countdown constructive algorithms greedy interactive number theory probabilities	1800	6.3k
1713F	Lost Array bitmasks combinatorics constructive algorithms dp math	2900	771
1712B	Woeful Permutation constructive algorithms greedy number theory	800	22.5k
1712D	Empty Graph binary search constructive algorithms data structures greedy shortest paths	2000	5.2k
1711A	Perfect Permutation constructive algorithms	800	26.6k
1710A	Color the Picture constructive algorithms greedy math	1500	12k
1710C	XOR Triangle bitmasks brute force constructive algorithms dp greedy math	2500	1.7k
1710D	Recover the Tree constructive algorithms trees	3400	565
1709C	Recover an RBS constructive algorithms greedy implementation strings	1800	10.5k
1708B	Difference of GCDs constructive algorithms math	1100	29.9k
1707A	Doremy's IQ binary search constructive algorithms greedy implementation	1600	15.7k
1707F	Bugaboo bitmasks constructive algorithms dp number theory	3500	186
1706A	Another String Minimization Problem 2-sat constructive algorithms greedy string suffix structures strings	800	24.3k
1706D1	Chopping Carrots (Easy Version) binary search brute force constructive algorithms greedy number theory	1700	7.8k
1706D2	Chopping Carrots (Hard Version) brute force constructive algorithms data structures dp greedy math number theory two pointers	2400	2k
1705B	Mark the Dust Sweeper constructive algorithms greedy implementation	900	25.8k
1705D	Mark and Lightbulbs combinatorics constructive algorithms greedy math sortings	1800	7.2k
1705F	Mark and the Online Exam bitmasks constructive algorithms interactive probabilities	2900	718
1704A	Two 0-1 Sequences constructive algorithms greedy	800	16.7k
1704D	Magical Array constructive algorithms hashing implementation math	1900	5.4k
1704E	Count Seconds brute force constructive algorithms dp graphs implementation math	2200	2.7k
1704F	Colouring Game constructive algorithms dp games	2600	1.3k
1704G	Mio and Lucky Array constructive algorithms fft math strings	3500	168
1704H1	Game of AI (easy version) combinatorics constructive algorithms dp fft math	3200	346
1702A	Round Down the Price constructive algorithms	800	38.5k
1702F	Equate Multisets constructive algorithms data structures greedy math number theory	1700	9.6k
1700A	Optimal Path constructive algorithms greedy math	800	23.7k
1700B	Palindromic Numbers constructive algorithms implementation math	1100	20.1k
1700C	Helping the Nature constructive algorithms data structures greedy	1700	12.3k
1700E	Serega the Pirate brute force constructive algorithms	2600	1k
1700F	Puzzle constructive algorithms dp greedy	2600	1.1k
1699A	The Third Three Number Problem constructive algorithms math	800	24.9k
1699B	Almost Ternary Matrix bitmasks constructive algorithms matrices	900	22k
1699C	The Third Problem combinatorics constructive algorithms math	1700	10.8k
1698B	Rising Sand constructive algorithms greedy implementation	800	21.5k
1698D	Fixed Point Guessing binary search constructive algorithms interactive	1600	12.5k
1698F	Equal Reversal constructive algorithms graphs implementation math	2800	782
1697C	awoo's Favorite Problem binary search constructive algorithms data structures greedy implementation strings two pointers	1400	15.9k
1697D	Guess The String binary search constructive algorithms interactive	1900	5.1k
1697E	Coloring brute force combinatorics constructive algorithms dp geometry graphs greedy implementation math	2400	1.5k
1697F	Too Many Constraints 2-sat constructive algorithms graphs implementation	2800	789
1696C	Fishingprince Plays With Array constructive algorithms greedy implementation math	1400	12.7k
1696D	Permutation Graph binary search constructive algorithms data structures divide and conquer greedy shortest paths	1900	6.1k
1696F	Tree Recovery brute force constructive algorithms dfs and similar dsu graphs trees	2600	1.2k
1695D1	Tree Queries (Easy Version) brute force constructive algorithms dfs and similar dp greedy trees	2200	2.5k
1695D2	Tree Queries (Hard Version) constructive algorithms dfs and similar dp greedy trees	2300	2.3k
1695E	Ambiguous Dominoes constructive algorithms dfs and similar graphs	2700	543
1694B	Paranoid String constructive algorithms greedy	1200	20.8k
1691B	Shoe Shuffling constructive algorithms greedy implementation two pointers	1000	37.6k
1691C	Sum of Substrings brute force constructive algorithms greedy math strings	1400	17.4k
1691D	Max GEQ Sum binary search constructive algorithms data structures divide and conquer implementation two pointers	1800	7.7k
1690A	Print a Pedestal (Codeforces logo?) constructive algorithms greedy	800	35.8k
1689E	ANDfinity bitmasks brute force constructive algorithms dfs and similar dsu graphs	2500	1.4k
1688B	Patchouli's Magical Talisman bitmasks constructive algorithms greedy sortings	800	19.2k
1688C	Manipulating History constructive algorithms greedy strings	1700	8.8k
1687B	Railway System constructive algorithms graphs greedy interactive sortings	1700	4.2k
1687E	Become Big For Me combinatorics constructive algorithms greedy math number theory	3500	324
1685A	Circular Local MiniMax constructive algorithms greedy sortings	1100	18.7k
1685C	Bring Balance brute force constructive algorithms greedy	2600	1.4k
1685D1	Permutation Weight (Easy Version) constructive algorithms dfs and similar dsu	2800	535
1685D2	Permutation Weight (Hard Version) constructive algorithms greedy	3500	144
1684A	Digit Minimization constructive algorithms games math strings	800	25k
1684B	Z mod X = C constructive algorithms math	800	21.9k
1684C	Column Swapping brute force constructive algorithms greedy implementation sortings	1400	13.3k
1684D	Traps constructive algorithms greedy sortings	1700	10.9k
1684E	MEX vs DIFF binary search brute force constructive algorithms data structures greedy two pointers	2100	3.7k
1684G	Euclid Guess constructive algorithms flows graph matchings math number theory	2800	818
1684H	Hard Cut constructive algorithms dfs and similar divide and conquer math	3400	305
1682B	AND Sorting bitmasks constructive algorithms sortings	1100	27.9k
1682C	LIS or Reverse LIS? constructive algorithms greedy implementation math	1400	16.6k
1682D	Circular Spanning Tree constructive algorithms implementation trees	2000	3.8k
1682E	Unordered Swaps constructive algorithms dfs and similar graphs greedy math sortings trees	2700	777
1677C	Tokitsukaze and Two Colorful Tapes constructive algorithms dfs and similar graphs greedy	1900	4.1k
1674A	Number Transformation constructive algorithms math	800	28.1k
1674D	A-B-C Sort constructive algorithms implementation sortings	1200	17.9k
1674E	Breaking the Wall binary search brute force constructive algorithms greedy math	2000	7.8k
1673F	Anti-Theft Road Planning bitmasks constructive algorithms divide and conquer greedy interactive math	2400	980
1672B	I love AAAB constructive algorithms implementation	800	16.5k
1672C	Unequal Array constructive algorithms greedy implementation	1100	14.1k
1672D	Cyclic Rotation constructive algorithms greedy implementation two pointers	1700	7k
1672E	notepad.exe binary search constructive algorithms greedy interactive	2200	2.5k
1672F1	Array Shuffling constructive algorithms graphs greedy	2000	3.6k
1672F2	Checker for Array Shuffling constructive algorithms dfs and similar graphs	2800	957
1672G	Cross Xor constructive algorithms graphs math matrices	3200	677
1672H	Zigu Zagu constructive algorithms data structures greedy	2700	1.2k

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