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Problemset

2,107 problems · filtered by 1 tag

#	Name	Rating↕	Solved↕
1993F1	Dyn-scripted Robot (Easy Version) brute force chinese remainder theorem constructive algorithms math number theory	2400	1.2k
1992A	Only Pluses brute force constructive algorithms greedy math sortings	800	50.1k
1992C	Gorilla and Permutation constructive algorithms math	900	33.8k
1992E	Novice's Mistake brute force constructive algorithms implementation math strings	1700	11k
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
1984A	Strange Splitting constructive algorithms	800	23k
1984G	Magic Trick II constructive algorithms implementation sortings	3200	305
1983A	Array Divisibility constructive algorithms math	800	28.3k
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
1981D	Turtle and Multiplication constructive algorithms dfs and similar graphs number theory	2400	2.2k
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
1979C	Earning on Bets binary search combinatorics constructive algorithms number theory	1200	22.5k
1979D	Fixing a Binary String bitmasks brute force constructive algorithms dp greedy hashing strings	1800	8k
1979E	Manhattan Triangle binary search constructive algorithms data structures geometry implementation two pointers	2400	1.9k
1979F	Kostyanych's Theorem brute force constructive algorithms graphs interactive	2900	451
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
1977E	Tensor constructive algorithms graphs interactive	2600	951
1974D	Ingenuity-2 constructive algorithms greedy implementation	1400	18k
1973C	Cat, Fox and Double Maximum constructive algorithms greedy implementation math sortings	1700	10k
1970A2	Balanced Unshuffle (Medium) brute force constructive algorithms trees	2400	621
1970A3	Balanced Unshuffle (Hard) constructive algorithms trees	2400	688
1970B1	Exact Neighbours (Easy) constructive algorithms	1900	1.7k
1970B2	Exact Neighbours (Medium) constructive algorithms	2100	1.2k
1970B3	Exact Neighbours (Hard) constructive algorithms	2300	736
1970D1	Arithmancy (Easy) brute force constructive algorithms interactive strings	2100	967
1970D2	Arithmancy (Medium) constructive algorithms interactive probabilities strings	2600	332
1969A	Two Friends constructive algorithms implementation math	800	22.3k
1969B	Shifts and Sorting constructive algorithms greedy	1000	22.6k
1968C	Assembly via Remainders constructive algorithms number theory	1000	29.7k
1968E	Cells Arrangement constructive algorithms	1600	12.9k
1966A	Card Exchange constructive algorithms games greedy	800	19.7k
1966B	Rectangle Filling constructive algorithms implementation	1100	17.5k
1965B	Missing Subsequence Sum bitmasks constructive algorithms greedy number theory	1800	8.3k
1965C	Folding Strip constructive algorithms greedy strings	2300	2.5k
1965D	Missing Subarray Sum constructive algorithms	2900	572
1965E	Connected Cubes constructive algorithms games	3100	475
1958E	Yet Another Permutation Constructive *special constructive algorithms	1900	336
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
1956F	Nene and the Passing Game constructive algorithms data structures dsu graphs sortings	3000	747
1955B	Progressive Square constructive algorithms data structures implementation sortings	1000	32.8k
1955H	The Most Reckless Defense bitmasks brute force constructive algorithms dp flows graph matchings shortest paths	2300	1.6k
1954A	Painting the Ribbon constructive algorithms greedy math	900	28k
1952J	Help, what does it mean to be "Based" *special brute force constructive algorithms expression parsing implementation sortings	unrated	910
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
1949D	Funny or Scary? constructive algorithms	2600	574
1949K	Make Triangle constructive algorithms math	2800	482
1948A	Special Characters brute force constructive algorithms	800	31.3k
1948C	Arrow Path brute force constructive algorithms dfs and similar dp graphs shortest paths	1300	21.5k
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
1945G	Cook and Porridge binary search constructive algorithms data structures implementation	2500	946
1944B	Equal XOR bitmasks constructive algorithms	1100	18.4k
1943C	Tree Compass constructive algorithms dfs and similar greedy trees	2300	2.7k
1942A	Farmer John's Challenge constructive algorithms math	800	18.6k
1942B	Bessie and MEX constructive algorithms math	1100	15.7k
1941G	Rudolf and Subway constructive algorithms dfs and similar graphs shortest paths	2000	4.8k
1940A	Parallel Universes *special constructive algorithms dfs and similar dsu graphs	unrated	106
1940B	Three Arrays *special constructive algorithms implementation sortings	unrated	275
1940D	Almost Certainly *special constructive algorithms data structures sortings	unrated	177
1939A	Draw Polygon Lines *special constructive algorithms dp geometry interactive	unrated	30
1939B	Evidence Board *special constructive algorithms dfs and similar graphs trees	unrated	308
1936A	Bitwise Operation Wizard bitmasks constructive algorithms greedy interactive math	1700	8.8k
1935A	Entertainment in MAC constructive algorithms strings	800	30.5k
1935B	Informatics in MAC constructive algorithms	1200	21.1k
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
1934E	Weird LCM Operations brute force constructive algorithms number theory	3000	379
1933D	Turtle Tenacity: Continual Mods constructive algorithms greedy math number theory sortings	1200	23.9k
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks brute force combinatorics constructive algorithms dfs and similar math	2300	1.2k
1930B	Permutation Printing brute force constructive algorithms math	1000	17.9k
1930C	Lexicographically Largest binary search constructive algorithms data structures greedy sortings	1700	8.2k
1930H	Interactive Mex Tree constructive algorithms dfs and similar interactive trees	3300	379
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
1927E	Klever Permutation constructive algorithms math two pointers	1400	17.3k

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