Problemset - Codeforces

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Codeforces Round 1006 (Div. 3)
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Problems

#	Name
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x2086
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x4501
1968F	Equal XOR Segments binary search, data structures	1800	x5849
1968E	Cells Arrangement constructive algorithms	1600	x11036
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math	1300	x15649
1968C	Assembly via Remainders constructive algorithms, number theory	1000	x26242
1968B	Prefiquence greedy, two pointers	800	x28887
1968A	Maximize? brute force, math, number theory	800	x36078
1967F	Next and Prev brute force, data structures, implementation	3200	x74
1967E2	Again Counting Arrays (Hard Version) combinatorics, dp, math	3500	x127
1967E1	Again Counting Arrays (Easy Version) combinatorics, dp, fft, math	3100	x239
1967D	Long Way to be Non-decreasing binary search, dfs and similar, graphs, implementation, shortest paths, two pointers	2800	x720
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees	2300	x1866
1967B2	Reverse Card (Hard Version) brute force, math, number theory	2200	x4116
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x14057
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x13248
1966B	Rectangle Filling constructive algorithms, implementation	1100	x15727
1966A	Card Exchange constructive algorithms, games, greedy	800	x18539
1965F	Conference data structures, flows	3300	x213
1965E	Connected Cubes constructive algorithms, games	3100	x326
1965D	Missing Subarray Sum constructive algorithms	2900	x457
1965C	Folding Strip constructive algorithms, greedy, strings	2300	x2058
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x7132
1965A	Everything Nim games, greedy, math, sortings	1400	x14592
1958J	Necromancer *special problem	3200	x36
1958I	Equal Trees *special problem, graphs, meet-in-the-middle	3100	x37
1958H	Composite Spells *special problem, dp	2600	x81
1958G	Observation Towers *special problem	2400	x113
1958F	Narrow Paths *special problem, combinatorics	2000	x211
1958E	Yet Another Permutation Constructive *special problem, constructive algorithms	1900	x283
1958D	Staircase *special problem	1600	x570
1958C	Firewood *special problem	1500	x799
1958B	Clock in the Pool *special problem, math	1400	x995
1958A	1-3-5 *special problem, dp	1100	x2135
1957F2	Frequency Mismatch (Hard Version) binary search, data structures, dfs and similar, hashing, probabilities, trees	2700	x479
1957F1	Frequency Mismatch (Easy Version) binary search, data structures, divide and conquer, hashing, probabilities, trees	2600	x538
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x1357
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x4763
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x10274
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x18614
1957A	Stickogon constructive algorithms, greedy	800	x24178
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x398
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x927
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1512
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x4134
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x13661
1956B	Nene and the Card Game games, greedy	800	x21974
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x22476
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x1322
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x4855
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x7502
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x9078
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x16303
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x22261
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x29185
1955A	Yogurt Sale math	800	x46212
1954F	Unique Strings combinatorics, dp, math	3100	x277
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x2466
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x6621
1954C	Long Multiplication greedy, math, number theory	1200	x20441
1954B	Make It Ugly implementation, math	1200	x19489
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x25150
1953A	Accuracy-Preserving Summation Algorithm *special problem
1952J	Help, what does it mean to be "Based" *special problem, brute force, constructive algorithms, expression parsing, implementation, sortings		x792
1952I	Dark Matter *special problem, bitmasks, geometry		x555
1952H	Palindrome *special problem, implementation, strings		x716
1952G	Mathematician Takeover *special problem, binary search, dfs and similar, math		x1061
1952F	Grid *special problem, brute force		x1784
1952E	Sweep Line *special problem, combinatorics, games, math		x268
1952D	Are You a Procrastinator? *special problem, implementation		x4756
1952C	They Have Fooled *special problem, brute force, schedules		x2983
1952B	Is it stated? *special problem, strings		x11373
1952A	Are You a Robot, Again? *special problem, strings		x12798
1951I	Growing Trees binary search, constructive algorithms, flows, graphs, greedy	3200	x84
1951H	Thanos Snap binary search, dp, games, greedy, trees	3200	x292
1951G	Clacking Balls combinatorics, math, probabilities	3100	x353
1951F	Inversion Composition constructive algorithms, data structures, greedy	2500	x817
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x3833
1951D	Buying Jewels constructive algorithms, greedy, math	2000	x5643
1951C	Ticket Hoarding greedy, math, sortings	1400	x12355
1951B	Battle Cows binary search, data structures, greedy	1200	x15405
1951A	Dual Trigger constructive algorithms, greedy, math	900	x20624
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x4731
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x9757
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x15369
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x24280
1950C	Clock Conversion implementation, math	800	x42053
1950B	Upscaling implementation	800	x40071
1950A	Stair, Peak, or Neither? implementation	800	x57591
1949K	Make Triangle constructive algorithms, math	2800	x361
1949J	Amanda the Amoeba graphs, implementation, trees, two pointers	2600	x438
1949I	Disks dfs and similar, geometry, graph matchings, graphs	1800	x2072
1949H	Division Avoidance greedy, math	3100	x133
1949G	Scooter graphs, greedy	2300	x869
1949F	Dating greedy, sortings, trees	2200	x1104
1949E	Damage per Second brute force, math	2900	x115
1949D	Funny or Scary? constructive algorithms	2600	x446
1949C	Annual Ants' Gathering dfs and similar, dp, greedy, trees	1900	x1951
1949B	Charming Meals binary search, brute force, greedy, sortings	1500	x3779
1949A	Grove brute force, dfs and similar, dp, geometry, probabilities	3300	x126