Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
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Codeforces Round 941 (Div. 2)
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Problems

#	Name
1957F2	Frequency Mismatch (Hard Version) binary search, data structures, dfs and similar, hashing, probabilities, trees		x154
1957F1	Frequency Mismatch (Easy Version) binary search, data structures, divide and conquer, hashing, probabilities, trees		x202
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory		x629
1957D	A BIT of an Inequality bitmasks, brute force, dp, math		x2562
1957C	How Does the Rook Move? combinatorics, dp, math		x5848
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation		x12508
1957A	Stickogon constructive algorithms, greedy		x16589
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x202
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x545
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1051
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x2699
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x9380
1956B	Nene and the Card Game games, greedy	800	x17038
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x17201
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x887
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x2958
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x5283
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x6411
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x11646
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x16085
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x21782
1955A	Yogurt Sale math	800	x33264
1954F	Unique Strings combinatorics, dp, math	3100	x172
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1495
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x4323
1954C	Long Multiplication greedy, math, number theory	1200	x14014
1954B	Make It Ugly implementation, math	1200	x14016
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x18658
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x663
1952I	Dark Matter bitmasks, geometry		x309
1952H	Palindrome implementation, strings		x328
1952G	Mathematician Takeover binary search, dfs and similar, math		x890
1952F	Grid brute force		x1605
1952E	Sweep Line combinatorics, games, math		x196
1952D	Are You a Procrastinator? implementation		x4014
1952C	They Have Fooled brute force, schedules		x2663
1952B	Is it stated? strings		x10083
1952A	Are You a Robot, Again? strings		x11148
1951I	Growing Trees binary search, constructive algorithms, flows, graphs, greedy	3200	x36
1951H	Thanos Snap binary search, dp, games, greedy, trees	3200	x168
1951G	Clacking Balls combinatorics, math, probabilities	3100	x212
1951F	Inversion Composition constructive algorithms, data structures, greedy	2500	x611
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x2806
1951D	Buying Jewels constructive algorithms, greedy, math	2000	x4423
1951C	Ticket Hoarding greedy, math, sortings	1400	x8877
1951B	Battle Cows binary search, data structures, greedy	1200	x11213
1951A	Dual Trigger constructive algorithms, greedy, math	900	x15453
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3197
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x7052
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x11158
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x19231
1950C	Clock Conversion implementation, math	800	x33353
1950B	Upscaling implementation	800	x31721
1950A	Stair, Peak, or Neither? implementation	800	x41353
1949K	Make Triangle constructive algorithms, math		x218
1949J	Amanda the Amoeba graphs, implementation, trees, two pointers		x297
1949I	Disks dfs and similar, geometry, graph matchings, graphs		x1039
1949H	Division Avoidance greedy, math		x64
1949G	Scooter graphs, greedy		x597
1949F	Dating greedy, sortings, trees		x681
1949E	Damage per Second brute force, math		x74
1949D	Funny or Scary? constructive algorithms		x295
1949C	Annual Ants' Gathering dfs and similar, dp, greedy, trees		x1060
1949B	Charming Meals binary search, brute force, greedy, sortings		x1518
1949A	Grove brute force, dfs and similar, dp, geometry, probabilities		x79
1948G	MST with Matching bitmasks, brute force, dsu, graph matchings, trees	3100	x565
1948F	Rare Coins combinatorics, math, probabilities	2500	x1052
1948E	Clique Partition brute force, constructive algorithms, graphs, greedy, implementation	2100	x2508
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x7916
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x13930
1948B	Array Fix brute force, dp, greedy, implementation	1100	x19953
1948A	Special Characters brute force, constructive algorithms	800	x25688
1946F	Nobody is needed 2-sat, data structures, dfs and similar, dp	2500	x731
1946E	Girl Permutation combinatorics, dp, math, number theory	2200	x1991
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x3842
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x8719
1946B	Maximum Sum dp, greedy, math	1100	x17351
1946A	Median of an Array greedy, implementation, sortings	800	x22913
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x455
1945G	Cook and Porridge binary search, constructive algorithms, data structures, implementation	2500	x596
1945F	Kirill and Mushrooms data structures, sortings	1900	x3436
1945E	Binary Search binary search, constructive algorithms, greedy	1700	x6677
1945D	Seraphim the Owl dp, greedy	1300	x11628
1945C	Left and Right Houses brute force	1200	x12313
1945B	Fireworks math, number theory	900	x18957
1945A	Setting up Camp greedy, math	800	x23830
1944B	Equal XOR bitmasks, constructive algorithms	1100	x13840
1944A	Destroying Bridges graphs, greedy, math	800	x20608
1943F	Minimum Hamming Distance dp	3500	x70
1943E2	MEX Game 2 (Hard Version) binary search, greedy, two pointers	3300	x200
1943E1	MEX Game 2 (Easy Version) binary search, brute force, greedy	2900	x321
1943D2	Counting Is Fun (Hard Version) combinatorics, dp	2800	x549
1943D1	Counting Is Fun (Easy Version) brute force, combinatorics, dp, math	2400	x1171
1943C	Tree Compass constructive algorithms, dfs and similar, greedy, trees	2300	x1706
1943B	Non-Palindromic Substring hashing, implementation, math, strings	2000	x3112
1943A	MEX Game 1 games, greedy	1300	x14738
1942H	Farmer John's Favorite Intern data structures, dp, flows, trees	3500	x54
1942G	Bessie and Cards combinatorics, dp, math	2800	x341
1942F	Farmer John's Favorite Function brute force, data structures, implementation, math	2700	x517
1942E	Farm Game combinatorics, games	2300	x1377

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