Problemset - Codeforces

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Codeforces Round 950 (Div. 3)
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Problems

#	Name
1981C	Turtle and an Incomplete Sequence bitmasks, constructive algorithms, greedy, implementation, math, shortest paths		x2448
1981B	Turtle and an Infinite Sequence bitmasks, math		x7823
1981A	Turtle and Piggy Are Playing a Game brute force, greedy, math		x14258
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x4541
1977B	Binary Colouring bitmasks, constructive algorithms, greedy, math	1100	x13603
1977A	Little Nikita math	800	x22887
1976E	Splittable Permutations combinatorics, data structures, dfs and similar, greedy, math, trees		x495
1975G	Zimpha Fan Club fft, greedy, math, strings	3000	x137
1975F	Set bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math	2600	x515
1975B	378QAQ and Mocha's Array brute force, greedy, math, sortings	1000	x13111
1974A	Phone Desktop greedy, math	800	x27785
1973E	Cat, Fox and Swaps graphs, math, sortings	2500	x596
1973D	Cat, Fox and Maximum Array Split brute force, interactive, math	2400	x1527
1973C	Cat, Fox and Double Maximum constructive algorithms, greedy, implementation, math, sortings	1700	x6543
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x11332
1973A	Chess For Three brute force, dp, implementation, math	900	x19989
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x7599
1971E	Find the Car binary search, math, sortings	1500	x10741
1969D	Shop Game data structures, greedy, math, sortings	1900	x3643
1969A	Two Friends constructive algorithms, implementation, math	800	x17246
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x1499
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math	1300	x12449
1968A	Maximize? brute force, math, number theory	800	x28912
1967E2	Again Counting Arrays (Hard Version) combinatorics, dp, math	3500	x68
1967E1	Again Counting Arrays (Easy Version) combinatorics, dp, fft, math	3100	x142
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees	2300	x1393
1967B2	Reverse Card (Hard Version) brute force, math, number theory	2200	x3298
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x10776
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x10089
1965A	Everything Nim games, greedy, math, sortings	1400	x11104
1958B	Clock in the Pool *special problem, math	1400	x672
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x1052
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x3834
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x8097
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x711
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1278
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3377
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x11171
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3700
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x6137
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x18574
1955A	Yogurt Sale math	800	x37976
1954F	Unique Strings combinatorics, dp, math	3100	x215
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1879
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x5165
1954C	Long Multiplication greedy, math, number theory	1200	x16624
1954B	Make It Ugly implementation, math	1200	x16240
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x21296
1952G	Mathematician Takeover binary search, dfs and similar, math		x949
1952E	Sweep Line combinatorics, games, math		x214
1951G	Clacking Balls combinatorics, math, probabilities	3100	x269
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x3122
1951D	Buying Jewels constructive algorithms, greedy, math	2000	x4830
1951C	Ticket Hoarding greedy, math, sortings	1400	x9976
1951A	Dual Trigger constructive algorithms, greedy, math	900	x17047
1950C	Clock Conversion implementation, math	800	x35867
1949K	Make Triangle constructive algorithms, math	2800	x255
1949H	Division Avoidance greedy, math	3100	x78
1949E	Damage per Second brute force, math	2900	x89
1948F	Rare Coins combinatorics, math, probabilities	2500	x1173
1946E	Girl Permutation combinatorics, dp, math, number theory	2200	x2164
1946B	Maximum Sum dp, greedy, math	1100	x18405
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x510
1945B	Fireworks math, number theory	900	x20231
1945A	Setting up Camp greedy, math	800	x25289
1944A	Destroying Bridges graphs, greedy, math	800	x21691
1943D1	Counting Is Fun (Easy Version) brute force, combinatorics, dp, math	2400	x1287
1943B	Non-Palindromic Substring hashing, implementation, math, strings	2000	x3407
1942G	Bessie and Cards combinatorics, dp, math	2800	x381
1942F	Farmer John's Favorite Function brute force, data structures, implementation, math	2700	x585
1942C2	Bessie's Birthday Cake (Hard Version) geometry, greedy, math	1700	x5611
1942C1	Bessie's Birthday Cake (Easy Version) geometry, greedy, math	1300	x9823
1942B	Bessie and MEX constructive algorithms, math	1100	x12620
1942A	Farmer John's Challenge constructive algorithms, math	800	x16026
1941B	Rudolf and 121 brute force, dp, greedy, math	1000	x26961
1941A	Rudolf and the Ticket brute force, math	800	x39517
1937A	Shuffle Party implementation, math	800	x21774
1936E	Yet Yet Another Permutation Problem divide and conquer, fft, math	3400	x98
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2504
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x6690
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1195
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x7461
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x6145
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x17034
1934A	Too Min Too Max greedy, math	800	x23766
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x894
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x9931
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x18180
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x20875
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x30352
1933A	Turtle Puzzle: Rearrange and Negate greedy, math, sortings	800	x35915
1932G	Moving Platforms graphs, math, number theory, shortest paths	2300	x903
1932E	Final Countdown implementation, math, number theory	1600	x7040
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x14036
1931G	One-Dimensional Puzzle combinatorics, math, number theory	2000	x2491
1931E	Anna and the Valentine's Day Gift games, greedy, math, sortings	1400	x13674
1931D	Divisible Pairs combinatorics, math, number theory	1300	x16268
1931C	Make Equal Again brute force, greedy, math	1000	x26557
1930E	2..3...4.... Wonderful! Wonderful! combinatorics, dp, math	2400	x1013
1930B	Permutation Printing brute force, constructive algorithms, math	1000	x13883

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