Problemset - Codeforces

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Educational Codeforces Round 166 (Rated for Div. 2)
31:38:59
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Problems

#	Name
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings		x3871
1977B	Binary Colouring bitmasks, constructive algorithms, greedy, math		x12528
1977A	Little Nikita math		x20791
1975G	Zimpha Fan Club fft, greedy, math, strings		x113
1975F	Set bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math		x457
1975B	378QAQ and Mocha's Array brute force, greedy, math, sortings		x12503
1974A	Phone Desktop greedy, math	800	x26974
1973E	Cat, Fox and Swaps graphs, math, sortings	2500	x569
1973D	Cat, Fox and Maximum Array Split brute force, interactive, math	2400	x1481
1973C	Cat, Fox and Double Maximum constructive algorithms, greedy, implementation, math, sortings	1700	x6367
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x11049
1973A	Chess For Three brute force, dp, implementation, math	900	x19604
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x7436
1971E	Find the Car binary search, math, sortings	1500	x10550
1969D	Shop Game data structures, greedy, math, sortings	1900	x3580
1969A	Two Friends constructive algorithms, implementation, math	800	x16905
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x1483
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math	1300	x12325
1968A	Maximize? brute force, math, number theory	800	x28590
1967E2	Again Counting Arrays (Hard Version) combinatorics, dp, math	3500	x65
1967E1	Again Counting Arrays (Easy Version) combinatorics, dp, fft, math	3100	x133
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees	2300	x1382
1967B2	Reverse Card (Hard Version) brute force, math, number theory	2200	x3273
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x10639
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x9950
1965A	Everything Nim games, greedy, math, sortings	1400	x10985
1958B	Clock in the Pool *special problem, math	1400	x660
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x1046
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x3807
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x8027
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x709
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1276
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3361
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x11107
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3659
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x6100
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x18482
1955A	Yogurt Sale math	800	x37766
1954F	Unique Strings combinatorics, dp, math	3100	x215
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1871
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x5116
1954C	Long Multiplication greedy, math, number theory	1200	x16437
1954B	Make It Ugly implementation, math	1200	x16095
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x21141
1952G	Mathematician Takeover binary search, dfs and similar, math		x940
1952E	Sweep Line combinatorics, games, math		x213
1951G	Clacking Balls combinatorics, math, probabilities	3100	x262
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x3108
1951D	Buying Jewels constructive algorithms, greedy, math	2000	x4807
1951C	Ticket Hoarding greedy, math, sortings	1400	x9924
1951A	Dual Trigger constructive algorithms, greedy, math	900	x16970
1950C	Clock Conversion implementation, math	800	x35748
1949K	Make Triangle constructive algorithms, math	2800	x252
1949H	Division Avoidance greedy, math	3100	x76
1949E	Damage per Second brute force, math	2900	x87
1948F	Rare Coins combinatorics, math, probabilities	2500	x1168
1946E	Girl Permutation combinatorics, dp, math, number theory	2200	x2155
1946B	Maximum Sum dp, greedy, math	1100	x18318
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x510
1945B	Fireworks math, number theory	900	x20166
1945A	Setting up Camp greedy, math	800	x25189
1944A	Destroying Bridges graphs, greedy, math	800	x21606
1943D1	Counting Is Fun (Easy Version) brute force, combinatorics, dp, math	2400	x1278
1943B	Non-Palindromic Substring hashing, implementation, math, strings	2000	x3400
1942G	Bessie and Cards combinatorics, dp, math	2800	x380
1942F	Farmer John's Favorite Function brute force, data structures, implementation, math	2700	x582
1942C2	Bessie's Birthday Cake (Hard Version) geometry, greedy, math	1700	x5597
1942C1	Bessie's Birthday Cake (Easy Version) geometry, greedy, math	1300	x9791
1942B	Bessie and MEX constructive algorithms, math	1100	x12572
1942A	Farmer John's Challenge constructive algorithms, math	800	x15967
1941B	Rudolf and 121 brute force, dp, greedy, math	1000	x26870
1941A	Rudolf and the Ticket brute force, math	800	x39438
1937A	Shuffle Party implementation, math	800	x21737
1936E	Yet Yet Another Permutation Problem divide and conquer, fft, math	3400	x97
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2500
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x6668
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1188
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x7441
1934C	Find a Mine binary search, constructive algorithms, geometry, greedy, interactive, math	1700	x6134
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x16981
1934A	Too Min Too Max greedy, math	800	x23694
1933G	Turtle Magic: Royal Turtle Shell Pattern bitmasks, brute force, combinatorics, constructive algorithms, dfs and similar, math	2300	x890
1933E	Turtle vs. Rabbit Race: Optimal Trainings binary search, implementation, math, ternary search	1500	x9898
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x18127
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x20824
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x30302
1933A	Turtle Puzzle: Rearrange and Negate greedy, math, sortings	800	x35852
1932G	Moving Platforms graphs, math, number theory, shortest paths	2300	x900
1932E	Final Countdown implementation, math, number theory	1600	x6998
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x13988
1931G	One-Dimensional Puzzle combinatorics, math, number theory	2000	x2484
1931E	Anna and the Valentine's Day Gift games, greedy, math, sortings	1400	x13629
1931D	Divisible Pairs combinatorics, math, number theory	1300	x16187
1931C	Make Equal Again brute force, greedy, math	1000	x26465
1930E	2..3...4.... Wonderful! Wonderful! combinatorics, dp, math	2400	x1008
1930B	Permutation Printing brute force, constructive algorithms, math	1000	x13843
1929F	Sasha and the Wedding Binary Search Tree brute force, combinatorics, data structures, dfs and similar, math, trees	2300	x1657
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1535
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4237
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x13481

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