Problemset - Codeforces

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Codeforces Round (Div. 3)
43:40:20
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Problems

#	Name
1972B	Coin Games games, games		x9129
1972A	Contest Proposal greedy, greedy		x10858
1969F	Card Pairing dp, greedy		x43
1969E	Unique Array binary search, data structures, divide and conquer, greedy		x529
1969D	Shop Game data structures, greedy, sortings		x2159
1969C	Minimizing the Sum dp		x4149
1969B	Shifts and Sorting constructive algorithms, greedy		x11508
1969A	Two Friends graphs, implementation, math		x13200
1967F	Next and Prev brute force, data structures, dp, schedules		x3
1967E2	Again Counting Arrays (Hard Version) combinatorics, dp		x13
1967E1	Again Counting Arrays (Easy Version) dp, fft, math		x45
1967D	Long Way to be Non-decreasing binary search, implementation, two pointers		x127
1967C	Fenwick Tree combinatorics, math		x615
1967B2	Reverse Card (Hard Version) math, number theory		x1293
1967B1	Reverse Card (Easy Version) brute force, math, number theory		x5998
1967A	Permutation Counting binary search, implementation, math, sortings		x5192
1966B	Rectangle Filling constructive algorithms		x9586
1966A	Card Exchange chinese remainder theorem, flows, greedy, string suffix structures		x12501
1965F	Conference data structures, flows		x49
1965E	Connected Cubes constructive algorithms		x138
1965D	Missing Subarray Sum constructive algorithms		x200
1965C	Folding Strip constructive algorithms, greedy, strings		x1158
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory		x4079
1965A	Everything Nim games, greedy, math, sortings		x8273
1957F2	Frequency Mismatch (Hard Version) binary search, data structures, dfs and similar, hashing, probabilities, trees		x231
1957F1	Frequency Mismatch (Easy Version) binary search, data structures, divide and conquer, hashing, probabilities, trees		x288
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory		x880
1957D	A BIT of an Inequality bitmasks, brute force, dp, math		x3240
1957C	How Does the Rook Move? combinatorics, dp, math		x6882
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation		x13903
1957A	Stickogon constructive algorithms, greedy		x18560
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x240
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x615
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1137
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x2964
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x10034
1956B	Nene and the Card Game games, greedy	800	x18028
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x18149
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x943
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3180
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x5574
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x6756
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x12179
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x16856
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x22753
1955A	Yogurt Sale math	800	x34762
1954F	Unique Strings combinatorics, dp, math	3100	x184
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1632
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x4610
1954C	Long Multiplication greedy, math, number theory	1200	x14825
1954B	Make It Ugly implementation, math	1200	x14699
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x19529
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x677
1952I	Dark Matter bitmasks, geometry		x326
1952H	Palindrome implementation, strings		x344
1952G	Mathematician Takeover binary search, dfs and similar, math		x903
1952F	Grid brute force		x1623
1952E	Sweep Line combinatorics, games, math		x203
1952D	Are You a Procrastinator? implementation		x4081
1952C	They Have Fooled brute force, schedules		x2690
1952B	Is it stated? strings		x10194
1952A	Are You a Robot, Again? strings		x11253
1951I	Growing Trees binary search, constructive algorithms, flows, graphs, greedy	3200	x40
1951H	Thanos Snap binary search, dp, games, greedy, trees	3200	x185
1951G	Clacking Balls combinatorics, math, probabilities	3100	x233
1951F	Inversion Composition constructive algorithms, data structures, greedy	2500	x628
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x2915
1951D	Buying Jewels constructive algorithms, greedy, math	2000	x4558
1951C	Ticket Hoarding greedy, math, sortings	1400	x9207
1951B	Battle Cows binary search, data structures, greedy	1200	x11557
1951A	Dual Trigger constructive algorithms, greedy, math	900	x15887
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3316
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x7264
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x11479
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x19668
1950C	Clock Conversion implementation, math	800	x34017
1950B	Upscaling implementation	800	x32429
1950A	Stair, Peak, or Neither? implementation	800	x42361
1949K	Make Triangle constructive algorithms, math		x223
1949J	Amanda the Amoeba graphs, implementation, trees, two pointers		x305
1949I	Disks dfs and similar, geometry, graph matchings, graphs		x1065
1949H	Division Avoidance greedy, math		x68
1949G	Scooter graphs, greedy		x616
1949F	Dating greedy, sortings, trees		x706
1949E	Damage per Second brute force, math		x78
1949D	Funny or Scary? constructive algorithms		x296
1949C	Annual Ants' Gathering dfs and similar, dp, greedy, trees		x1089
1949B	Charming Meals binary search, brute force, greedy, sortings		x1555
1949A	Grove brute force, dfs and similar, dp, geometry, probabilities		x80
1948G	MST with Matching bitmasks, brute force, dsu, graph matchings, trees	3100	x586
1948F	Rare Coins combinatorics, math, probabilities	2500	x1089
1948E	Clique Partition brute force, constructive algorithms, graphs, greedy, implementation	2100	x2558
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x8049
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x14153
1948B	Array Fix brute force, dp, greedy, implementation	1100	x20196
1948A	Special Characters brute force, constructive algorithms	800	x25993
1946F	Nobody is needed 2-sat, data structures, dfs and similar, dp	2500	x749
1946E	Girl Permutation combinatorics, dp, math, number theory	2200	x2039
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x3928
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x8895

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