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Problemset

877 problems · filtered by 2 tags

#	Name	Rating↕	Solved↕
1994D	Funny Game constructive algorithms dsu graphs greedy math number theory trees	1900	7.7k
1994H	Fortnite combinatorics constructive algorithms games greedy hashing interactive math number theory strings	3500	779
1993B	Parity and Sum constructive algorithms greedy	1100	26.8k
1992A	Only Pluses brute force constructive algorithms greedy math sortings	800	50.1k
1991B	AND Reconstruction bitmasks constructive algorithms greedy	1100	19.2k
1991C	Absolute Zero constructive algorithms greedy math	1300	18k
1991D	Prime XOR Coloring bitmasks constructive algorithms graphs greedy math number theory	1900	8k
1991E	Coloring Game constructive algorithms dfs and similar games graphs greedy interactive	1900	5.2k
1991G	Grid Reset constructive algorithms greedy implementation	2700	758
1991I	Grid Game constructive algorithms games graph matchings greedy interactive	3500	172
1990B	Array Craft constructive algorithms greedy	1200	20.1k
1988C	Increasing Sequence with Fixed OR bitmasks constructive algorithms greedy	1300	20.6k
1983B	Corner Twist constructive algorithms greedy implementation math	1200	18.6k
1983D	Swap Dilemma constructive algorithms data structures divide and conquer greedy math sortings	1700	11.5k
1981C	Turtle and an Incomplete Sequence bitmasks brute force constructive algorithms greedy implementation math	1800	6.4k
1980C	Sofia and the Lost Operations constructive algorithms greedy	1300	22k
1980E	Permutation of Rows and Columns constructive algorithms data structures greedy hashing implementation math matrices sortings	1600	13.3k
1979D	Fixing a Binary String bitmasks brute force constructive algorithms dp greedy hashing strings	1800	8k
1978A	Alice and Books constructive algorithms greedy sortings	800	28.8k
1978C	Manhattan Permutations constructive algorithms data structures greedy implementation math	1300	18k
1977B	Binary Colouring bitmasks constructive algorithms greedy math	1100	20.1k
1974D	Ingenuity-2 constructive algorithms greedy implementation	1400	18k
1973C	Cat, Fox and Double Maximum constructive algorithms greedy implementation math sortings	1700	10k
1969B	Shifts and Sorting constructive algorithms greedy	1000	22.6k
1966A	Card Exchange constructive algorithms games greedy	800	19.7k
1965B	Missing Subsequence Sum bitmasks constructive algorithms greedy number theory	1800	8.3k
1965C	Folding Strip constructive algorithms greedy strings	2300	2.5k
1957A	Stickogon constructive algorithms greedy	800	25.8k
1957B	A BIT of a Construction bitmasks constructive algorithms greedy implementation	1100	20.7k
1956C	Nene's Magical Matrix constructive algorithms greedy math	1600	15.4k
1956D	Nene and the Mex Operator bitmasks brute force constructive algorithms divide and conquer dp greedy implementation math	2000	4.9k
1954A	Painting the Ribbon constructive algorithms greedy math	900	28k
1951A	Dual Trigger constructive algorithms greedy math	900	22.8k
1951D	Buying Jewels constructive algorithms greedy math	2000	6.4k
1951E	No Palindromes brute force constructive algorithms divide and conquer greedy hashing implementation math strings	2000	4.6k
1951F	Inversion Composition constructive algorithms data structures greedy	2500	1k
1951I	Growing Trees binary search constructive algorithms flows graphs greedy	3200	118
1948E	Clique Partition brute force constructive algorithms graphs greedy implementation	2100	3.6k
1946D	Birthday Gift bitmasks brute force constructive algorithms greedy implementation	1900	5.7k
1945E	Binary Search binary search constructive algorithms greedy	1700	9.9k
1943C	Tree Compass constructive algorithms dfs and similar greedy trees	2300	2.7k
1936A	Bitwise Operation Wizard bitmasks constructive algorithms greedy interactive math	1700	8.8k
1935C	Messenger in MAC binary search brute force constructive algorithms data structures dp greedy sortings	1800	9.9k
1935F	Andrey's Tree binary search constructive algorithms data structures dfs and similar dsu greedy implementation trees	2800	634
1934C	Find a Mine binary search constructive algorithms geometry greedy interactive math	1700	8.2k
1934D1	XOR Break --- Solo Version bitmasks constructive algorithms greedy	2100	4.2k
1933D	Turtle Tenacity: Continual Mods constructive algorithms greedy math number theory sortings	1200	23.9k
1930C	Lexicographically Largest binary search constructive algorithms data structures greedy sortings	1700	8.2k
1929A	Sasha and the Beautiful Array constructive algorithms greedy math sortings	800	35.3k
1929B	Sasha and the Drawing constructive algorithms greedy math	800	26.9k
1929C	Sasha and the Casino binary search brute force constructive algorithms games greedy math	1400	17.5k
1928E	Modular Sequence brute force constructive algorithms dp graphs greedy math number theory	2300	2.3k
1927B	Following the String constructive algorithms greedy strings	900	38.6k
1925A	We Got Everything Covered! constructive algorithms greedy strings	800	31.3k
1924A	Did We Get Everything Covered? constructive algorithms dp greedy shortest paths strings	1500	17k
1923C	Find B constructive algorithms greedy	1400	18.8k
1923D	Slimes binary search constructive algorithms data structures greedy two pointers	1800	8.5k
1922E	Increasing Subsequences bitmasks constructive algorithms divide and conquer greedy math	1800	9.3k
1919D	01 Tree constructive algorithms data structures dsu greedy sortings trees	2100	4.6k
1918A	Brick Wall constructive algorithms greedy implementation math	800	32.6k
1918B	Minimize Inversions constructive algorithms data structures greedy implementation sortings	900	27.5k
1916C	Training Before the Olympiad constructive algorithms games greedy implementation math	1200	20.1k
1916F	Group Division constructive algorithms dfs and similar graphs greedy	2900	756
1909C	Heavy Intervals constructive algorithms data structures dsu greedy math sortings	1400	13.4k
1907C	Removal of Unattractive Pairs constructive algorithms greedy math strings	1200	23.5k
1907G	Lights brute force constructive algorithms dfs and similar graphs greedy implementation	2200	2.4k
1904D1	Set To Max (Easy Version) brute force constructive algorithms greedy	1600	8.8k
1904D2	Set To Max (Hard Version) constructive algorithms data structures divide and conquer greedy implementation sortings	1800	5.8k
1903B	StORage room bitmasks brute force constructive algorithms greedy	1200	15k
1903C	Theofanis' Nightmare constructive algorithms greedy	1400	14.8k
1902C	Insert and Equalize brute force constructive algorithms greedy math number theory	1300	17.5k
1901C	Add, Divide and Floor constructive algorithms greedy math	1400	14.5k
1900A	Cover in Water constructive algorithms greedy implementation strings	800	69.9k
1899F	Alex's whims constructive algorithms graphs greedy shortest paths trees	1600	9.7k
1896C	Matching Arrays binary search constructive algorithms greedy sortings	1400	11.8k
1896F	Bracket Xoring constructive algorithms greedy implementation math	2600	1k
1893B	Neutral Tonality constructive algorithms greedy sortings two pointers	1700	11.8k
1893D	Colorful Constructive constructive algorithms data structures greedy	2600	1.1k
1891C	Smilo and Monsters binary search constructive algorithms greedy sortings two pointers	1500	21.5k
1889A	Qingshan Loves Strings 2 constructive algorithms greedy implementation	1300	15.5k
1889B	Doremy's Connecting Plan constructive algorithms greedy math sortings	1700	8.7k
1887C	Minimum Array binary search brute force constructive algorithms data structures greedy hashing two pointers	2400	2.3k
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
1882E1	Two Permutations (Easy Version) brute force constructive algorithms greedy number theory	2400	1.3k
1879B	Chips on the Board constructive algorithms greedy	900	25.3k
1876C	Autosynthesis constructive algorithms dfs and similar graphs greedy sortings	2100	2.8k
1873G	ABBC or BACB constructive algorithms greedy	1500	17.2k
1870A	MEXanized Array constructive algorithms greedy math	800	20.3k
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
1868D	Flower-like Pseudotree constructive algorithms graphs greedy implementation trees	3000	418
1868E	Min-Sum-Max constructive algorithms dp greedy	3500	120
1867C	Salyg1n and the MEX Game constructive algorithms data structures games greedy interactive	1300	12.8k
1867D	Cyclic Operations brute force constructive algorithms dfs and similar graphs greedy implementation	1800	6.9k
1867F	Most Different Tree brute force constructive algorithms dfs and similar greedy hashing	2700	554
1864A	Increasing and Decreasing constructive algorithms greedy implementation math	800	21.5k
1864B	Swap and Reverse constructive algorithms greedy sortings strings	1100	16.8k
1864D	Matrix Cascade brute force constructive algorithms data structures dp greedy math	1700	7.7k
1863D	Two-Colored Dominoes constructive algorithms greedy	1400	10.9k

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