Problemset - Codeforces

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Codeforces Round 945 (Div. 2)
40:55:27
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Problems

#	Name
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x5825
1971D	Binary Cut dp, greedy, implementation, sortings, strings	1100	x17661
1971C	Clock and Strings implementation	900	x22307
1971B	Different String implementation, strings	800	x25582
1971A	My First Sorting Problem implementation, sortings	800	x30901
1970F3	Playing Quidditch (Hard) implementation	2300	x225
1970F2	Playing Quidditch (Medium) implementation	2300	x232
1970F1	Playing Quidditch (Easy) implementation	2300	x301
1970A1	Balanced Shuffle (Easy) implementation, sortings	1000	x1987
1969F	Card Pairing dp, greedy, hashing, implementation	3000	x108
1969C	Minimizing the Sum dp, implementation	1700	x6001
1969A	Two Friends constructive algorithms, implementation, math	800	x15672
1967F	Next and Prev brute force, data structures, implementation	3200	x28
1967D	Long Way to be Non-decreasing binary search, dfs and similar, graphs, implementation, shortest paths, two pointers	2800	x420
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x9018
1966B	Rectangle Filling constructive algorithms, implementation	1100	x11399
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x14967
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x661
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1212
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3221
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3479
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x7188
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x17882
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x23875
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1798
1954B	Make It Ugly implementation, math	1200	x15562
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x694
1952H	Palindrome implementation, strings		x355
1952D	Are You a Procrastinator? implementation		x4172
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x3026
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3512
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x7653
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x12059
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x20423
1950C	Clock Conversion implementation, math	800	x35244
1950B	Upscaling implementation	800	x33673
1950A	Stair, Peak, or Neither? implementation	800	x44244
1949J	Amanda the Amoeba graphs, implementation, trees, two pointers	2600	x314
1948E	Clique Partition brute force, constructive algorithms, graphs, greedy, implementation	2100	x2638
1948B	Array Fix brute force, dp, greedy, implementation	1100	x20525
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x4048
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x9152
1946A	Median of an Array greedy, implementation, sortings	800	x23597
1945G	Cook and Porridge binary search, constructive algorithms, data structures, implementation	2500	x625
1943B	Non-Palindromic Substring hashing, implementation, math, strings	2000	x3315
1942F	Farmer John's Favorite Function brute force, data structures, implementation, math	2700	x560
1942D	Learning to Paint binary search, data structures, dfs and similar, dp, greedy, implementation, sortings	2100	x2434
1941D	Rudolf and the Ball Game dfs and similar, dp, implementation	1200	x16656
1940B	Three Arrays *special problem, constructive algorithms, implementation, sortings		x174
1937B	Binary Path dp, greedy, implementation	1300	x13138
1937A	Shuffle Party implementation, math	800	x21500
1936C	Pokémon Arena data structures, graphs, greedy, implementation, shortest paths, sortings	2400	x1101
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2458
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x394
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x7351
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x9749
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x20568
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x30008
1932E	Final Countdown implementation, math, number theory	1600	x6831
1932D	Card Game greedy, implementation	1400	x9939
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x13737
1932A	Thorns and Coins dp, greedy, implementation	800	x26801
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2372
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x210
1927F	Microcycle data structures, dfs and similar, dsu, graphs, greedy, implementation, sortings, trees	1900	x3814
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x2970
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1496
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x10092
1926C	Vlad and a Sum of Sum of Digits dp, implementation	1200	x23300
1926B	Vlad and Shapes geometry, implementation	800	x29900
1926A	Vlad and the Best of Five implementation	800	x42278
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2283
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x332
1923B	Monsters Attack! dp, greedy, implementation	1100	x16204
1923A	Moving Chips greedy, implementation	800	x23299
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5239
1922C	Closest Cities greedy, implementation, math	1300	x16914
1922A	Tricky Template constructive algorithms, implementation, strings	800	x25892
1921G	Mischievous Shooter brute force, data structures, divide and conquer, dp, implementation	2200	x1130
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3461
1921B	Arranging Cats greedy, implementation	800	x32042
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5107
1919E	Counting Prefixes combinatorics, constructive algorithms, dp, implementation, math	2600	x778
1918F	Caterpillar on a Tree dfs and similar, graphs, greedy, implementation, sortings, trees	2500	x775
1918E	ace5 and Task Order constructive algorithms, divide and conquer, implementation, interactive, probabilities, sortings	2200	x1559
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4284
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x12602
1918B	Minimize Inversions constructive algorithms, data structures, greedy, implementation, sortings	900	x22169
1918A	Brick Wall constructive algorithms, greedy, implementation, math	800	x28796
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1660
1917C	Watering an Array brute force, greedy, implementation, math	1600	x9418
1916C	Training Before the Olympiad constructive algorithms, games, greedy, implementation, math	1200	x16713
1916A	2023 constructive algorithms, implementation, math, number theory	800	x24579
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x5444
1915D	Unnatural Language Processing greedy, implementation, strings	900	x27807
1915C	Can I Square? binary search, implementation	800	x37743
1915B	Not Quite Latin Square bitmasks, brute force, implementation	800	x38696
1915A	Odd One Out bitmasks, implementation	800	x50010
1914D	Three Activities brute force, dp, greedy, implementation, sortings	1200	x18257
1914A	Problemsolving Log implementation, strings	800	x29815

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