Problemset - Codeforces

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Codeforces Round (Div. 2)
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Problems

#	Name
1994H	Fortnite combinatorics, constructive algorithms, games, greedy, hashing, interactive, math, number theory, strings		x75
1994G	Minecraft bitmasks, brute force, dp, math		x514
1994E	Wooden Game bitmasks, greedy, math, sortings, trees		x2705
1994D	Funny Game constructive algorithms, dsu, graphs, greedy, math, number theory, trees		x3603
1994B	Fun Game bitmasks, constructive algorithms, greedy, math		x12783
1992G	Ultra-Meow combinatorics, dp, math	2000	x2074
1992E	Novice's Mistake brute force, constructive algorithms, implementation, math, strings	1700	x7249
1992C	Gorilla and Permutation constructive algorithms, math	900	x24276
1992B	Angry Monk greedy, math, sortings	800	x28344
1992A	Only Pluses brute force, constructive algorithms, greedy, math, sortings	800	x33265
1990D	Grid Puzzle bitmasks, dp, greedy, math		x3038
1990C	Mad MAD Sum brute force, greedy, math		x6018
1989E	Distance to Different combinatorics, dp, math	2300	x1503
1989D	Smithing Skill brute force, data structures, dp, greedy, math, sortings, two pointers	1900	x4830
1989C	Two Movies greedy, math	1400	x15155
1988F	Heartbeat combinatorics, dp, fft, math	3000	x83
1988A	Split the Multiset brute force, greedy, implementation, math	900	x18756
1987A	Upload More RAM greedy, math	800	x22019
1986G2	Permutation Problem (Hard Version) brute force, data structures, hashing, math, number theory	2500	x839
1986G1	Permutation Problem (Simple Version) binary search, brute force, combinatorics, data structures, math, number theory	2200	x1192
1986E	Beautiful Array greedy, math, number theory, sortings	1700	x7332
1986D	Mathematical Problem brute force, dp, greedy, implementation, math, two pointers	1400	x13191
1986A	X Axis brute force, geometry, math, sortings	800	x35752
1985G	D-Function combinatorics, math, number theory	1600	x7786
1985E	Secret Box brute force, combinatorics, math	1200	x17518
1985D	Manhattan Circle implementation, math	900	x30535
1985B	Maximum Multiple Sum brute force, math, number theory	800	x40024
1984F	Reconstruction brute force, dp, math	2500	x798
1984D	''a'' String Problem brute force, hashing, implementation, math, string suffix structures, strings	2000	x2828
1984C2	Magnitude (Hard Version) combinatorics, dp, greedy, math	1700	x6450
1984C1	Magnitude (Easy Version) dp, greedy, math	1300	x14442
1984B	Large Addition implementation, math	1100	x16498
1983E	I Love Balls combinatorics, math, probabilities	2300	x1649
1983D	Swap Dilemma constructive algorithms, data structures, divide and conquer, greedy, math, sortings	1700	x6890
1983B	Corner Twist constructive algorithms, greedy, implementation, math	1200	x14168
1983A	Array Divisibility constructive algorithms, math	800	x23110
1982E	Number of k-good subarrays bitmasks, brute force, combinatorics, divide and conquer, dp, math, meet-in-the-middle	2300	x1331
1982D	Beauty of the mountains brute force, data structures, implementation, math, number theory	1700	x6085
1982B	Collatz Conjecture brute force, implementation, math, number theory	1200	x14978
1982A	Soccer greedy, implementation, math, sortings	800	x22728
1981C	Turtle and an Incomplete Sequence bitmasks, brute force, constructive algorithms, greedy, implementation, math	1800	x4546
1981B	Turtle and an Infinite Sequence bitmasks, math	1300	x12247
1981A	Turtle and Piggy Are Playing a Game brute force, greedy, math	800	x20564
1980F2	Field Division (hard version) math, sortings	2400	x850
1980F1	Field Division (easy version) data structures, math, sortings	1900	x3307
1980E	Permutation of Rows and Columns constructive algorithms, data structures, greedy, hashing, implementation, math, matrices, sortings	1600	x9170
1980D	GCD-sequence greedy, implementation, math, number theory	1400	x12763
1980A	Problem Generator math	800	x37152
1978D	Elections data structures, greedy, implementation, math	1600	x9634
1978C	Manhattan Permutations constructive algorithms, data structures, greedy, implementation, math	1300	x13079
1978B	New Bakery binary search, greedy, math, ternary search	800	x20311
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x5972
1977B	Binary Colouring bitmasks, constructive algorithms, greedy, math	1100	x16353
1977A	Little Nikita math	800	x28472
1976E	Splittable Permutations combinatorics, data structures, dfs and similar, greedy, math, trees	2500	x869
1975G	Zimpha Fan Club fft, greedy, math, strings	3000	x200
1975F	Set bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math	2600	x717
1975B	378QAQ and Mocha's Array brute force, greedy, math, sortings	1000	x16203
1974A	Phone Desktop greedy, math	800	x31169
1973E	Cat, Fox and Swaps graphs, math, sortings	2500	x711
1973D	Cat, Fox and Maximum Array Split brute force, interactive, math	2400	x1727
1973C	Cat, Fox and Double Maximum constructive algorithms, greedy, implementation, math, sortings	1700	x7532
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x12805
1973A	Chess For Three brute force, dp, implementation, math	900	x22508
1971F	Circle Perimeter binary search, brute force, dfs and similar, geometry, implementation, math	1600	x8849
1971E	Find the Car binary search, math, sortings	1500	x12629
1969D	Shop Game data structures, greedy, math, sortings	1900	x4057
1969A	Two Friends constructive algorithms, implementation, math	800	x18728
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x1724
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math	1300	x13721
1968A	Maximize? brute force, math, number theory	800	x31366
1967E2	Again Counting Arrays (Hard Version) combinatorics, dp, math	3500	x85
1967E1	Again Counting Arrays (Easy Version) combinatorics, dp, fft, math	3100	x172
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees	2300	x1514
1967B2	Reverse Card (Hard Version) brute force, math, number theory	2200	x3582
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x12051
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x11284
1965A	Everything Nim games, greedy, math, sortings	1400	x12315
1958B	Clock in the Pool *special problem, math	1400	x769
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x1137
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x4131
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x8800
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x770
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1358
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3592
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x12016
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x4077
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x6547
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x19777
1955A	Yogurt Sale math	800	x40247
1954F	Unique Strings combinatorics, dp, math	3100	x235
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x2025
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x5552
1954C	Long Multiplication greedy, math, number theory	1200	x18008
1954B	Make It Ugly implementation, math	1200	x17295
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x22571
1952G	Mathematician Takeover binary search, dfs and similar, math		x985
1952E	Sweep Line combinatorics, games, math		x227
1951G	Clacking Balls combinatorics, math, probabilities	3100	x305
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x3346

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