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Problemset

172 problems · filtered by 2 tags

#	Name	Rating↕	Solved↕
2249D	Xor Permutation Matrix bitmasks constructive algorithms math	unrated	672
2245C	MEXOR bitmasks constructive algorithms math	unrated	6k
2242E	Product of Closures bitmasks brute force constructive algorithms greedy implementation math number theory	2200	1.4k
2222E	Seek the Truth binary search bitmasks constructive algorithms interactive	2000	2.3k
2219B2	Unique Values (Hard version) binary search bitmasks constructive algorithms interactive	2000	3.8k
2217F	Interval Game bitmasks combinatorics constructive algorithms dp games greedy math probabilities	2300	885
2215C	Oriented Journey bitmasks brute force communication constructive algorithms graphs interactive trees	2200	819
2189C1	XOR Convenience (Easy Version) bitmasks constructive algorithms math	1300	14.7k
2189C2	XOR-convenience (Hard Version) bitmasks constructive algorithms math	1800	6.5k
2187B	Shortest Statement Ever bitmasks constructive algorithms dp greedy	1800	5.6k
2180C	XOR-factorization bitmasks constructive algorithms dp greedy number theory	1900	6.7k
2179D	Blackslex and Penguin Civilization bitmasks constructive algorithms greedy math	1300	14.1k
2168C	Intercepting Butterflies bitmasks communication constructive algorithms graphs interactive	unrated	912
2162C	Beautiful XOR bitmasks constructive algorithms greedy	1100	22.2k
2157G	Isaac's Queries bitmasks brute force constructive algorithms dfs and similar divide and conquer dp greedy interactive math probabilities	2800	672
2156D	Find the Last Number binary search bitmasks constructive algorithms interactive	1900	5.5k
2146D1	Max Sum OR (Easy Version) bitmasks constructive algorithms divide and conquer greedy trees	1500	11.2k
2146D2	Max Sum OR (Hard Version) bitmasks constructive algorithms divide and conquer greedy	2000	4.3k
2138A	Cake Assignment bitmasks constructive algorithms greedy	1100	17.7k
2129C1	Interactive RBS (Easy Version) binary search bitmasks constructive algorithms interactive	1900	4.5k
2129C2	Interactive RBS (Medium Version) binary search bitmasks constructive algorithms interactive	2000	3.2k
2129C3	Interactive RBS (Hard Version) binary search bitmasks constructive algorithms dp interactive	2300	1.9k
2127G2	Inter Active (Hard Version) binary search bitmasks constructive algorithms graphs implementation interactive math probabilities	3500	126
2119C	A Good Problem bitmasks constructive algorithms math	1300	16.8k
2109C1	Hacking Numbers (Easy Version) bitmasks constructive algorithms interactive math number theory	1500	11.8k
2108B	SUMdamental Decomposition bitmasks constructive algorithms greedy implementation math	1300	14.9k
2096G	Wonderful Guessing Game bitmasks constructive algorithms interactive	3200	451
2086E	Zebra-like Numbers bitmasks brute force constructive algorithms dfs and similar dp greedy math	2400	1.7k
2085C	Serval and The Formula bitmasks constructive algorithms dp greedy	1600	14k
2081C	Quaternary Matrix bitmasks constructive algorithms greedy implementation matrices	2700	372
2077B	Finding OR Sum bitmasks constructive algorithms implementation interactive math	1900	3.7k
2077F	AND x OR bitmasks constructive algorithms dp	3300	271
2072C	Creating Keys for StORages Has Become My Main Skill bitmasks constructive algorithms greedy	1200	20k
2072F	Goodbye, Banker Life 2-sat bitmasks combinatorics constructive algorithms fft math number theory	1700	8.7k
2071D2	Infinite Sequence (Hard Version) bitmasks brute force constructive algorithms data structures dp implementation math	2500	1.1k
2057C	Trip to the Olympiad bitmasks constructive algorithms greedy math	1500	14.1k
2049E	Broken Queries binary search bitmasks brute force constructive algorithms implementation interactive	2400	1.6k
2040C	Ordered Permutations bitmasks combinatorics constructive algorithms greedy math two pointers	1600	11k
2035C	Alya and Permutation bitmasks constructive algorithms math	1400	11.8k
1994B	Fun Game bitmasks constructive algorithms greedy math	1100	19.8k
1993E	Xor-Grid Problem bitmasks constructive algorithms dp implementation	2700	741
1991B	AND Reconstruction bitmasks constructive algorithms greedy	1100	19.2k
1991D	Prime XOR Coloring bitmasks constructive algorithms graphs greedy math number theory	1900	8k
1988C	Increasing Sequence with Fixed OR bitmasks constructive algorithms greedy	1300	20.6k
1981C	Turtle and an Incomplete Sequence bitmasks brute force constructive algorithms greedy implementation math	1800	6.4k
1979D	Fixing a Binary String bitmasks brute force constructive algorithms dp greedy hashing strings	1800	8k
1977B	Binary Colouring bitmasks constructive algorithms greedy math	1100	20.1k
1965B	Missing Subsequence Sum bitmasks constructive algorithms greedy number theory	1800	8.3k
1957B	A BIT of a Construction bitmasks constructive algorithms greedy implementation	1100	20.7k
1956D	Nene and the Mex Operator bitmasks brute force constructive algorithms divide and conquer dp greedy implementation math	2000	4.9k
1955H	The Most Reckless Defense bitmasks brute force constructive algorithms dp flows graph matchings shortest paths	2300	1.6k
1946D	Birthday Gift bitmasks brute force constructive algorithms greedy implementation	1900	5.7k
1944B	Equal XOR bitmasks constructive algorithms	1100	18.4k
1936A	Bitwise Operation Wizard bitmasks constructive algorithms greedy interactive math	1700	8.8k
1934D1	XOR Break --- Solo Version bitmasks constructive algorithms greedy	2100	4.2k
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks brute force combinatorics constructive algorithms dfs and similar math	2300	1.2k
1922E	Increasing Subsequences bitmasks constructive algorithms divide and conquer greedy math	1800	9.3k
1917F	Construct Tree bitmasks constructive algorithms dp trees	2500	1.3k
1909B	Make Almost Equal With Mod bitmasks constructive algorithms math number theory	1200	33.3k
1909E	Multiple Lamps bitmasks brute force constructive algorithms math number theory	2400	1.7k
1906B	Button Pressing bitmasks constructive algorithms hashing	2600	865
1903B	StORage room bitmasks brute force constructive algorithms greedy	1200	15k
1895D	XOR Construction bitmasks constructive algorithms data structures math string suffix structures trees	1900	7.2k
1886E	I Wanna be the Team Leader bitmasks constructive algorithms dp greedy math sortings two pointers	2400	1.9k
1882B	Sets and Union bitmasks brute force constructive algorithms greedy	1300	17.6k
1868B1	Candy Party (Easy Version) bitmasks constructive algorithms graphs greedy implementation math	1700	8.4k
1868B2	Candy Party (Hard Version) bitmasks constructive algorithms dp greedy implementation math	2100	2.8k
1867B	XOR Palindromes bitmasks constructive algorithms strings	1100	18.8k
1864C	Divisor Chain bitmasks constructive algorithms math number theory	1300	15.5k
1844G	Tree Weights bitmasks constructive algorithms data structures dfs and similar implementation math matrices number theory trees	3000	1.2k
1835C	Twin Clusters bitmasks brute force constructive algorithms math probabilities	2600	1.2k
1801A	The Very Beautiful Blanket bitmasks constructive algorithms	1600	9.9k
1790E	Vlad and a Pair of Numbers bitmasks constructive algorithms	1400	17.6k
1789D	Serval and Shift-Shift-Shift bitmasks brute force constructive algorithms implementation	2200	2k
1788F	XOR, Tree, and Queries bitmasks constructive algorithms dfs and similar dsu graphs greedy implementation trees	2500	1.2k
1787E	The Harmonization of XOR bitmasks constructive algorithms greedy math	2100	2.8k
1780D	Bit Guessing Game binary search bitmasks constructive algorithms interactive	1800	5.9k
1779F	Xorcerer's Stones bitmasks constructive algorithms dp trees	2500	1.5k
1775B	Gardener and the Array bitmasks constructive algorithms	1300	21.9k
1763A	Absolute Maximization bitmasks constructive algorithms greedy math	800	17.1k
1748D	ConstructOR bitmasks chinese remainder theorem combinatorics constructive algorithms math number theory	2100	3.3k
1748F	Circular Xor Reversal bitmasks constructive algorithms	3000	403
1747D	Yet Another Problem binary search bitmasks constructive algorithms data structures	1900	5.7k
1743G	Antifibonacci Cut bitmasks combinatorics constructive algorithms data structures dp hashing math	3000	381
1726B	Mainak and Interesting Sequence bitmasks constructive algorithms math	1100	17.1k
1722G	Even-Odd XOR bitmasks constructive algorithms greedy	1500	14.5k
1713F	Lost Array bitmasks combinatorics constructive algorithms dp math	2900	771
1710C	XOR Triangle bitmasks brute force constructive algorithms dp greedy math	2500	1.7k
1707F	Bugaboo bitmasks constructive algorithms dp number theory	3500	186
1705F	Mark and the Online Exam bitmasks constructive algorithms interactive probabilities	2900	718
1699B	Almost Ternary Matrix bitmasks constructive algorithms matrices	900	22k
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
1682B	AND Sorting bitmasks constructive algorithms sortings	1100	27.9k
1673F	Anti-Theft Road Planning bitmasks constructive algorithms divide and conquer greedy interactive math	2400	979
1670E	Hemose on the Tree bitmasks constructive algorithms dfs and similar trees	2200	2k
1665D	GCD Guess bitmasks chinese remainder theorem constructive algorithms games interactive math number theory	2000	4.8k
1659B	Bit Flipping bitmasks constructive algorithms greedy strings	1300	12.1k
1659E	AND-MEX Walk bitmasks brute force constructive algorithms dfs and similar dsu graphs	2200	2k
1646C	Factorials and Powers of Two bitmasks brute force constructive algorithms dp math	1500	20.5k

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