Problemset - Codeforces

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Problems

#	Name
1974F	Cutting Game binary search, brute force, data structures, implementation, sortings, two pointers		x1449
1974D	Ingenuity-2 constructive algorithms, implementation		x8662
1974B	Symmetric Encoding implementation, sortings, strings		x21915
1973F	Maximum GCD Sum Queries bitmasks, brute force, dp, implementation, number theory		x79
1973C	Cat, Fox and Double Maximum constructive algorithms, greedy, implementation, math, sortings		x5466
1973A	Chess For Three brute force, dp, implementation, math		x17648
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x6886
1971D	Binary Cut dp, greedy, implementation, sortings, strings	1100	x19633
1971C	Clock and Strings implementation	900	x24605
1971B	Different String implementation, strings	800	x27949
1971A	My First Sorting Problem implementation, sortings	800	x33686
1970F3	Playing Quidditch (Hard) implementation	2300	x240
1970F2	Playing Quidditch (Medium) implementation	2300	x247
1970F1	Playing Quidditch (Easy) implementation	2300	x319
1970A1	Balanced Shuffle (Easy) implementation, sortings	1000	x2327
1969F	Card Pairing dp, greedy, hashing, implementation	3000	x114
1969C	Minimizing the Sum dp, implementation	1700	x6281
1969A	Two Friends constructive algorithms, implementation, math	800	x16250
1967F	Next and Prev brute force, data structures, implementation	3200	x34
1967D	Long Way to be Non-decreasing binary search, dfs and similar, graphs, implementation, shortest paths, two pointers	2800	x450
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x9543
1966B	Rectangle Filling constructive algorithms, implementation	1100	x11946
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x15316
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x687
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1246
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3299
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3559
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x7307
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x18212
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x24223
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1830
1954B	Make It Ugly implementation, math	1200	x15796
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x697
1952H	Palindrome implementation, strings		x357
1952D	Are You a Procrastinator? implementation		x4197
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x3064
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3573
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x7742
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x12196
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x20594
1950C	Clock Conversion implementation, math	800	x35452
1950B	Upscaling implementation	800	x33884
1950A	Stair, Peak, or Neither? implementation	800	x44614
1949J	Amanda the Amoeba graphs, implementation, trees, two pointers	2600	x321
1948E	Clique Partition brute force, constructive algorithms, graphs, greedy, implementation	2100	x2650
1948B	Array Fix brute force, dp, greedy, implementation	1100	x20645
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x4092
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x9255
1946A	Median of an Array greedy, implementation, sortings	800	x23765
1945G	Cook and Porridge binary search, constructive algorithms, data structures, implementation	2500	x634
1943B	Non-Palindromic Substring hashing, implementation, math, strings	2000	x3349
1942F	Farmer John's Favorite Function brute force, data structures, implementation, math	2700	x569
1942D	Learning to Paint binary search, data structures, dfs and similar, dp, greedy, implementation, sortings	2100	x2455
1941D	Rudolf and the Ball Game dfs and similar, dp, implementation	1200	x16764
1940B	Three Arrays *special problem, constructive algorithms, implementation, sortings		x175
1937B	Binary Path dp, greedy, implementation	1300	x13240
1937A	Shuffle Party implementation, math	800	x21620
1936C	Pokémon Arena data structures, graphs, greedy, implementation, shortest paths, sortings	2400	x1116
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2479
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x399
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x7392
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x9813
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x20703
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x30165
1932E	Final Countdown implementation, math, number theory	1600	x6901
1932D	Card Game greedy, implementation	1400	x10026
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x13860
1932A	Thorns and Coins dp, greedy, implementation	800	x27005
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2379
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x212
1927F	Microcycle data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees	1900	x3837
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x2989
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1513
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10181
1926C	Vlad and a Sum of Sum of Digits dp, implementation	1200	x23473
1926B	Vlad and Shapes geometry, implementation	800	x30020
1926A	Vlad and the Best of Five implementation	800	x42541
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2296
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x333
1923B	Monsters Attack! dp, greedy, implementation	1100	x16293
1923A	Moving Chips greedy, implementation	800	x23368
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5251
1922C	Closest Cities greedy, implementation, math	1300	x16975
1922A	Tricky Template constructive algorithms, implementation, strings	800	x25932
1921G	Mischievous Shooter brute force, data structures, divide and conquer, dp, implementation	2200	x1134
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3474
1921B	Arranging Cats greedy, implementation	800	x32111
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5135
1919E	Counting Prefixes combinatorics, constructive algorithms, dp, implementation, math	2600	x780
1918F	Caterpillar on a Tree dfs and similar, graphs, greedy, implementation, sortings, trees	2500	x780
1918E	ace5 and Task Order constructive algorithms, divide and conquer, implementation, interactive, probabilities, sortings	2200	x1569
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4304
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x12656
1918B	Minimize Inversions constructive algorithms, data structures, greedy, implementation, sortings	900	x22237
1918A	Brick Wall constructive algorithms, greedy, implementation, math	800	x28849
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1667
1917C	Watering an Array brute force, greedy, implementation, math	1600	x9452
1916C	Training Before the Olympiad constructive algorithms, games, greedy, implementation, math	1200	x16778
1916A	2023 constructive algorithms, implementation, math, number theory	800	x24626
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x5471

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