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Problemset

3,040 problems · filtered by 1 tag

#	Name	Rating↕	Solved↕
1974B	Symmetric Encoding implementation sortings strings	800	34.8k
1974D	Ingenuity-2 constructive algorithms greedy implementation	1400	18k
1974F	Cutting Game binary search brute force data structures implementation sortings two pointers	1900	4.5k
1973A	Chess For Three brute force dp implementation math	900	28.9k
1973C	Cat, Fox and Double Maximum constructive algorithms greedy implementation math sortings	1700	10k
1973F	Maximum GCD Sum Queries bitmasks brute force dp implementation number theory	3100	345
1971A	My First Sorting Problem implementation sortings	800	60.8k
1971B	Different String implementation strings	800	45.5k
1971C	Clock and Strings implementation	900	42.4k
1971D	Binary Cut dp greedy implementation sortings strings	1100	31k
1971F	Circle Perimeter binary search brute force dfs and similar geometry implementation math	1600	12.7k
1970A1	Balanced Shuffle (Easy) implementation sortings	1000	7.5k
1970F1	Playing Quidditch (Easy) implementation	2300	659
1970F2	Playing Quidditch (Medium) implementation	2300	534
1970F3	Playing Quidditch (Hard) implementation	2300	557
1969A	Two Friends constructive algorithms implementation math	800	22.3k
1969C	Minimizing the Sum dp implementation	1700	11.9k
1969F	Card Pairing dp greedy hashing implementation	3000	413
1967A	Permutation Counting binary search greedy implementation math sortings	1400	15.2k
1967D	Long Way to be Non-decreasing binary search dfs and similar graphs implementation shortest paths two pointers	2800	998
1967F	Next and Prev brute force data structures implementation	3200	104
1966B	Rectangle Filling constructive algorithms implementation	1100	17.5k
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
1956E1	Nene vs. Monsters (Easy Version) brute force implementation math	2500	1.7k
1956E2	Nene vs. Monsters (Hard Version) brute force greedy implementation math	2700	1.1k
1955B	Progressive Square constructive algorithms data structures implementation sortings	1000	32.8k
1955C	Inhabitant of the Deep Sea greedy implementation math	1300	25k
1955E	Long Inversions brute force greedy implementation sortings	1700	10.8k
1955G	GCD on a grid brute force dfs and similar dp implementation math number theory	1900	6.1k
1954B	Make It Ugly implementation math	1200	21.9k
1954E	Chain Reaction binary search data structures dsu greedy implementation math number theory	2200	3k
1952D	Are You a Procrastinator? *special implementation	unrated	5.4k
1952H	Palindrome *special implementation strings	unrated	813
1952J	Help, what does it mean to be "Based" *special brute force constructive algorithms expression parsing implementation sortings	unrated	910
1951E	No Palindromes brute force constructive algorithms divide and conquer greedy hashing implementation math strings	2000	4.6k
1950A	Stair, Peak, or Neither? implementation	800	71k
1950B	Upscaling implementation	800	44.8k
1950C	Clock Conversion implementation math	800	47.5k
1950D	Product of Binary Decimals brute force dp implementation number theory	1100	26.7k
1950E	Nearly Shortest Repeating Substring brute force implementation number theory strings	1500	17.7k
1950F	0, 1, 2, Tree! bitmasks brute force greedy implementation trees	1700	11.5k
1950G	Shuffling Songs bitmasks dfs and similar dp graphs hashing implementation strings	1900	6.3k
1949J	Amanda the Amoeba graphs implementation trees two pointers	2600	550
1948B	Array Fix brute force dp greedy implementation	1100	26.5k
1948E	Clique Partition brute force constructive algorithms graphs greedy implementation	2100	3.6k
1946A	Median of an Array greedy implementation sortings	800	28.8k
1946C	Tree Cutting binary search dp greedy implementation trees	1600	14.1k
1946D	Birthday Gift bitmasks brute force constructive algorithms greedy implementation	1900	5.7k
1945G	Cook and Porridge binary search constructive algorithms data structures implementation	2500	946
1943B	Non-Palindromic Substring hashing implementation math strings	2000	4.7k
1942D	Learning to Paint binary search data structures dfs and similar dp greedy implementation sortings	2100	3.4k
1942F	Farmer John's Favorite Function brute force data structures implementation math	2700	1k
1941D	Rudolf and the Ball Game dfs and similar dp implementation	1200	21.3k
1940B	Three Arrays *special constructive algorithms implementation sortings	unrated	275
1937A	Shuffle Party implementation math	800	24.9k
1937B	Binary Path dp greedy implementation	1300	17.5k
1936B	Pinball binary search data structures implementation math two pointers	2000	3.6k
1936C	Pokémon Arena data structures graphs greedy implementation shortest paths sortings	2400	1.8k
1935D	Exam in MAC binary search combinatorics implementation math	1800	11k
1935F	Andrey's Tree binary search constructive algorithms data structures dfs and similar dsu greedy implementation trees	2800	634
1933B	Turtle Math: Fast Three Task implementation math number theory	800	37k
1933C	Turtle Fingers: Count the Values of k brute force implementation math number theory	1100	25.7k
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search implementation math ternary search	1500	13.9k
1932A	Thorns and Coins dp greedy implementation	800	34.4k
1932C	LR-remainders brute force data structures implementation math two pointers	1400	19.3k
1932D	Card Game greedy implementation	1400	13.6k
1932E	Final Countdown implementation math number theory	1600	10.4k
1930D2	Sum over all Substrings (Hard Version) bitmasks divide and conquer dp dsu greedy implementation strings	2100	3.1k
1928F	Digital Patterns combinatorics data structures implementation math	2900	479
1927F	Microcycle data structures dfs and similar dsu graphs greedy implementation sortings trees	1900	5.6k
1926A	Vlad and the Best of Five implementation	800	63.5k
1926B	Vlad and Shapes geometry implementation	800	36.8k
1926C	Vlad and a Sum of Sum of Digits dp implementation	1200	33.4k
1926E	Vlad and an Odd Ordering binary search bitmasks data structures dp implementation math number theory	1500	15.2k
1926F	Vlad and Avoiding X bitmasks brute force dfs and similar dp implementation	2200	2.1k
1926G	Vlad and Trouble at MIT dfs and similar dp flows graphs greedy implementation trees	1900	4.7k
1924B	Space Harbour data structures implementation math sortings	2100	3.4k
1923A	Moving Chips greedy implementation	800	26.5k
1923B	Monsters Attack! dp greedy implementation	1100	20.1k
1923F	Shrink-Reverse binary search brute force greedy hashing implementation string suffix structures strings	2800	544
1922A	Tricky Template constructive algorithms implementation strings	800	29k
1922C	Closest Cities greedy implementation math	1300	22.4k
1922D	Berserk Monsters brute force data structures dsu implementation math	1900	6.9k
1921B	Arranging Cats greedy implementation	800	36.8k
1921F	Sum of Progression brute force data structures dp implementation math	1900	5.2k
1921G	Mischievous Shooter brute force data structures divide and conquer dp implementation	2200	1.5k
1920D	Array Repetition binary search brute force dsu implementation math	1900	6.7k
1919E	Counting Prefixes combinatorics constructive algorithms dp implementation math	2600	1.2k
1918A	Brick Wall constructive algorithms greedy implementation math	800	32.6k
1918B	Minimize Inversions constructive algorithms data structures greedy implementation sortings	900	27.5k
1918C	XOR-distance bitmasks greedy implementation math	1400	17.1k
1918D	Blocking Elements binary search data structures dp implementation two pointers	1900	6.4k
1918E	ace5 and Task Order constructive algorithms divide and conquer implementation interactive probabilities sortings	2200	2.1k
1918F	Caterpillar on a Tree dfs and similar graphs greedy implementation sortings trees	2500	1.2k
1917C	Watering an Array brute force greedy implementation math	1600	12.6k
1917D	Yet Another Inversions Problem combinatorics data structures dp implementation math number theory	2300	2.1k
1916A	2023 constructive algorithms implementation math number theory	800	28.5k
1916C	Training Before the Olympiad constructive algorithms games greedy implementation math	1200	20.1k
1915A	Odd One Out bitmasks implementation	800	82.1k

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