Problemset - Codeforces

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Problems

#	Name
1970F3	Playing Quidditch (Hard) implementation		x186
1970F2	Playing Quidditch (Medium) implementation		x190
1970F1	Playing Quidditch (Easy) implementation		x256
1970A1	Balanced Shuffle (Easy) implementation, sortings		x1463
1969F	Card Pairing dp, greedy, hashing, implementation	3000	x91
1969C	Minimizing the Sum dp, implementation	1700	x5227
1969A	Two Friends constructive algorithms, implementation, math	800	x14325
1967F	Next and Prev brute force, data structures, implementation		x20
1967D	Long Way to be Non-decreasing binary search, dfs and similar, graphs, implementation, shortest paths, two pointers		x350
1967A	Permutation Counting binary search, greedy, implementation, math, sortings		x7867
1966B	Rectangle Filling constructive algorithms, implementation	1100	x10439
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x14378
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x637
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1173
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3083
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3351
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x6980
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x17447
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x23414
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1713
1954B	Make It Ugly implementation, math	1200	x15072
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x687
1952H	Palindrome implementation, strings		x348
1952D	Are You a Procrastinator? implementation		x4126
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x2964
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3413
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x7456
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x11734
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x19996
1950C	Clock Conversion implementation, math	800	x34569
1950B	Upscaling implementation	800	x33017
1950A	Stair, Peak, or Neither? implementation	800	x43223
1949J	Amanda the Amoeba graphs, implementation, trees, two pointers	2600	x307
1948E	Clique Partition brute force, constructive algorithms, graphs, greedy, implementation	2100	x2593
1948B	Array Fix brute force, dp, greedy, implementation	1100	x20356
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x3977
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x8999
1946A	Median of an Array greedy, implementation, sortings	800	x23363
1945G	Cook and Porridge binary search, constructive algorithms, data structures, implementation	2500	x620
1943B	Non-Palindromic Substring hashing, implementation, math, strings	2000	x3251
1942F	Farmer John's Favorite Function brute force, data structures, implementation, math	2700	x552
1942D	Learning to Paint binary search, data structures, dfs and similar, dp, greedy, implementation, sortings	2100	x2397
1941D	Rudolf and the Ball Game dfs and similar, dp, implementation	1200	x16504
1940B	Three Arrays *special problem, constructive algorithms, implementation, sortings		x173
1937B	Binary Path dp, greedy, implementation	1300	x13012
1937A	Shuffle Party implementation, math	800	x21374
1936C	Pokémon Arena data structures, graphs, greedy, implementation, shortest paths, sortings	2400	x1076
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2419
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x391
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x7286
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x9653
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x20400
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x29799
1932E	Final Countdown implementation, math, number theory	1600	x6744
1932D	Card Game greedy, implementation	1400	x9838
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x13598
1932A	Thorns and Coins dp, greedy, implementation	800	x26596
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2356
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x209
1927F	Microcycle data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees	1900	x3773
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x2928
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1473
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x9943
1926C	Vlad and a Sum of Sum of Digits dp, implementation	1200	x22975
1926B	Vlad and Shapes geometry, implementation	800	x29634
1926A	Vlad and the Best of Five implementation	800	x41828
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2271
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x328
1923B	Monsters Attack! dp, greedy, implementation	1100	x16101
1923A	Moving Chips greedy, implementation	800	x23198
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5214
1922C	Closest Cities greedy, implementation, math	1300	x16824
1922A	Tricky Template constructive algorithms, implementation, strings	800	x25851
1921G	Mischievous Shooter brute force, data structures, divide and conquer, dp, implementation	2200	x1117
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3430
1921B	Arranging Cats greedy, implementation	800	x31927
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5082
1919E	Counting Prefixes combinatorics, constructive algorithms, dp, implementation, math	2600	x773
1918F	Caterpillar on a Tree dfs and similar, graphs, greedy, implementation, sortings, trees	2500	x769
1918E	ace5 and Task Order constructive algorithms, divide and conquer, implementation, interactive, probabilities, sortings	2200	x1544
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4245
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x12498
1918B	Minimize Inversions constructive algorithms, data structures, greedy, implementation, sortings	900	x22051
1918A	Brick Wall constructive algorithms, greedy, implementation, math	800	x28696
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1653
1917C	Watering an Array brute force, greedy, implementation, math	1600	x9365
1916C	Training Before the Olympiad constructive algorithms, games, greedy, implementation, math	1200	x16634
1916A	2023 constructive algorithms, implementation, math, number theory	800	x24499
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x5404
1915D	Unnatural Language Processing greedy, implementation, strings	900	x27585
1915C	Can I Square? binary search, implementation	800	x37429
1915B	Not Quite Latin Square bitmasks, brute force, implementation	800	x38424
1915A	Odd One Out bitmasks, implementation	800	x49515
1914D	Three Activities brute force, dp, greedy, implementation, sortings	1200	x18101
1914A	Problemsolving Log implementation, strings	800	x29614
1913A	Rating Increase implementation	800	x22260
1912E	Evaluate It and Back Again constructive algorithms, implementation, math	2200	x769
1912A	Accumulator Apex data structures, implementation, sortings	1900	x1869
1910C	Poisonous Swamp special problem, special problem, implementation, implementation	1600	x572
1910A	Username *special problem, implementation	1100	x1566

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