Problemset - Codeforces

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Codeforces Round 953 (Div. 2)
06:22:05
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Problems

#	Name
1970A2	Balanced Unshuffle (Medium) brute force, constructive algorithms, trees	2400	x371
1970A1	Balanced Shuffle (Easy) implementation, sortings	1000	x3224
1969F	Card Pairing dp, greedy, hashing, implementation	3000	x166
1969E	Unique Array binary search, data structures, divide and conquer, dp, greedy	2400	x1086
1969D	Shop Game data structures, greedy, math, sortings	1900	x3791
1969C	Minimizing the Sum dp, implementation	1700	x7019
1969B	Shifts and Sorting constructive algorithms, greedy	1000	x16303
1969A	Two Friends constructive algorithms, implementation, math	800	x17861
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x1592
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x3553
1968F	Equal XOR Segments binary search, data structures	1800	x4552
1968E	Cells Arrangement constructive algorithms	1600	x8881
1968D	Permutation Game brute force, dfs and similar, games, graphs, greedy, math	1300	x12968
1968C	Assembly via Remainders constructive algorithms, number theory	1000	x21740
1968B	Prefiquence greedy, two pointers	800	x25210
1968A	Maximize? brute force, math, number theory	800	x29901
1967F	Next and Prev brute force, data structures, implementation	3200	x46
1967E2	Again Counting Arrays (Hard Version) combinatorics, dp, math	3500	x77
1967E1	Again Counting Arrays (Easy Version) combinatorics, dp, fft, math	3100	x156
1967D	Long Way to be Non-decreasing binary search, dfs and similar, graphs, implementation, shortest paths, two pointers	2800	x516
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees	2300	x1427
1967B2	Reverse Card (Hard Version) brute force, math, number theory	2200	x3414
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x11344
1967A	Permutation Counting binary search, greedy, implementation, math, sortings	1400	x10534
1966B	Rectangle Filling constructive algorithms, implementation	1100	x13082
1966A	Card Exchange constructive algorithms, games, greedy	800	x16064
1965F	Conference data structures, flows	3300	x115
1965E	Connected Cubes constructive algorithms, games	3100	x202
1965D	Missing Subarray Sum constructive algorithms	2900	x307
1965C	Folding Strip constructive algorithms, greedy, strings	2300	x1581
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x5682
1965A	Everything Nim games, greedy, math, sortings	1400	x11538
1958J	Necromancer *special problem	3200	x18
1958I	Equal Trees *special problem, graphs, meet-in-the-middle	3100	x24
1958H	Composite Spells *special problem, dp	2600	x66
1958G	Observation Towers *special problem	2400	x94
1958F	Narrow Paths *special problem, combinatorics	2000	x160
1958E	Yet Another Permutation Constructive *special problem, constructive algorithms	1900	x215
1958D	Staircase *special problem	1600	x392
1958C	Firewood *special problem	1500	x532
1958B	Clock in the Pool *special problem, math	1400	x698
1958A	1-3-5 *special problem, dp	1100	x1227
1957F2	Frequency Mismatch (Hard Version) binary search, data structures, dfs and similar, hashing, probabilities, trees	2700	x320
1957F1	Frequency Mismatch (Easy Version) binary search, data structures, divide and conquer, hashing, probabilities, trees	2600	x380
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x1079
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x3931
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x8357
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x16164
1957A	Stickogon constructive algorithms, greedy	800	x21342
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x296
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x728
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1308
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3447
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x11488
1956B	Nene and the Card Game games, greedy	800	x19845
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x19994
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x1099
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3819
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x6270
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x7636
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x13636
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x18977
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x25138
1955A	Yogurt Sale math	800	x38784
1954F	Unique Strings combinatorics, dp, math	3100	x226
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1928
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x5297
1954C	Long Multiplication greedy, math, number theory	1200	x17142
1954B	Make It Ugly implementation, math	1200	x16596
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x21722
1953A	Accuracy-Preserving Summation Algorithm *special problem
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x713
1952I	Dark Matter bitmasks, geometry		x391
1952H	Palindrome implementation, strings		x368
1952G	Mathematician Takeover binary search, dfs and similar, math		x961
1952F	Grid brute force		x1677
1952E	Sweep Line combinatorics, games, math		x217
1952D	Are You a Procrastinator? implementation		x4286
1952C	They Have Fooled brute force, schedules		x2770
1952B	Is it stated? strings		x10487
1952A	Are You a Robot, Again? strings		x11605
1951I	Growing Trees binary search, constructive algorithms, flows, graphs, greedy	3200	x69
1951H	Thanos Snap binary search, dp, games, greedy, trees	3200	x226
1951G	Clacking Balls combinatorics, math, probabilities	3100	x283
1951F	Inversion Composition constructive algorithms, data structures, greedy	2500	x687
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x3213
1951D	Buying Jewels constructive algorithms, greedy, math	2000	x4976
1951C	Ticket Hoarding greedy, math, sortings	1400	x10368
1951B	Battle Cows binary search, data structures, greedy	1200	x13026
1951A	Dual Trigger constructive algorithms, greedy, math	900	x17764
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3765
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x8073
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x12822
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x21291
1950C	Clock Conversion implementation, math	800	x36523
1950B	Upscaling implementation	800	x34892
1950A	Stair, Peak, or Neither? implementation	800	x46271
1949K	Make Triangle constructive algorithms, math	2800	x258
1949J	Amanda the Amoeba graphs, implementation, trees, two pointers	2600	x329
1949I	Disks dfs and similar, geometry, graph matchings, graphs	1800	x1346