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		x173
1957F1	Frequency Mismatch (Easy Version) binary search, data structures, divide and conquer, hashing, probabilities, trees		x221
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory		x695
1957D	A BIT of an Inequality bitmasks, brute force, dp, math		x2746
1957C	How Does the Rook Move? combinatorics, dp, math		x6149
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation		x12893
1957A	Stickogon constructive algorithms, greedy		x17088
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x206
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x555
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1067
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x2741
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x9524
1956B	Nene and the Card Game games, greedy	800	x17237
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x17378
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x899
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x2997
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x5337
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x6476
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x11738
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x16220
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x21933
1955A	Yogurt Sale math	800	x33490
1954F	Unique Strings combinatorics, dp, math	3100	x174
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1520
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x4370
1954C	Long Multiplication greedy, math, number theory	1200	x14157
1954B	Make It Ugly implementation, math	1200	x14141
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x18806
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x669
1952I	Dark Matter bitmasks, geometry		x315
1952H	Palindrome implementation, strings		x333
1952G	Mathematician Takeover binary search, dfs and similar, math		x893
1952F	Grid brute force		x1614
1952E	Sweep Line combinatorics, games, math		x199
1952D	Are You a Procrastinator? implementation		x4031
1952C	They Have Fooled brute force, schedules		x2668
1952B	Is it stated? strings		x10104
1952A	Are You a Robot, Again? strings		x11170
1951I	Growing Trees binary search, constructive algorithms, flows, graphs, greedy	3200	x37
1951H	Thanos Snap binary search, dp, games, greedy, trees	3200	x171
1951G	Clacking Balls combinatorics, math, probabilities	3100	x219
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	x2822
1951D	Buying Jewels constructive algorithms, greedy, math	2000	x4443
1951C	Ticket Hoarding greedy, math, sortings	1400	x8933
1951B	Battle Cows binary search, data structures, greedy	1200	x11259
1951A	Dual Trigger constructive algorithms, greedy, math	900	x15517
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3220
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x7092
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x11203
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x19313
1950C	Clock Conversion implementation, math	800	x33447
1950B	Upscaling implementation	800	x31827
1950A	Stair, Peak, or Neither? implementation	800	x41501
1949K	Make Triangle constructive algorithms, math		x222
1949J	Amanda the Amoeba graphs, implementation, trees, two pointers		x298
1949I	Disks dfs and similar, geometry, graph matchings, graphs		x1043
1949H	Division Avoidance greedy, math		x65
1949G	Scooter graphs, greedy		x601
1949F	Dating greedy, sortings, trees		x685
1949E	Damage per Second brute force, math		x75
1949D	Funny or Scary? constructive algorithms		x296
1949C	Annual Ants' Gathering dfs and similar, dp, greedy, trees		x1065
1949B	Charming Meals binary search, brute force, greedy, sortings		x1524
1949A	Grove brute force, dfs and similar, dp, geometry, probabilities		x80
1948G	MST with Matching bitmasks, brute force, dsu, graph matchings, trees	3100	x568
1948F	Rare Coins combinatorics, math, probabilities	2500	x1058
1948E	Clique Partition brute force, constructive algorithms, graphs, greedy, implementation	2100	x2515
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x7940
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x13962
1948B	Array Fix brute force, dp, greedy, implementation	1100	x19997
1948A	Special Characters brute force, constructive algorithms	800	x25729
1946F	Nobody is needed 2-sat, data structures, dfs and similar, dp	2500	x732
1946E	Girl Permutation combinatorics, dp, math, number theory	2200	x1997
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x3852
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x8739
1946B	Maximum Sum dp, greedy, math	1100	x17385
1946A	Median of an Array greedy, implementation, sortings	800	x22969
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x457
1945G	Cook and Porridge binary search, constructive algorithms, data structures, implementation	2500	x599
1945F	Kirill and Mushrooms data structures, sortings	1900	x3442
1945E	Binary Search binary search, constructive algorithms, greedy	1700	x6688
1945D	Seraphim the Owl dp, greedy	1300	x11653
1945C	Left and Right Houses brute force	1200	x12341
1945B	Fireworks math, number theory	900	x19001
1945A	Setting up Camp greedy, math	800	x23881
1944B	Equal XOR bitmasks, constructive algorithms	1100	x13870
1944A	Destroying Bridges graphs, greedy, math	800	x20640
1943F	Minimum Hamming Distance dp	3500	x70
1943E2	MEX Game 2 (Hard Version) binary search, greedy, two pointers	3300	x205
1943E1	MEX Game 2 (Easy Version) binary search, brute force, greedy	2900	x326
1943D2	Counting Is Fun (Hard Version) combinatorics, dp	2800	x549
1943D1	Counting Is Fun (Easy Version) brute force, combinatorics, dp, math	2400	x1173
1943C	Tree Compass constructive algorithms, dfs and similar, greedy, trees	2300	x1713
1943B	Non-Palindromic Substring hashing, implementation, math, strings	2000	x3121
1943A	MEX Game 1 games, greedy	1300	x14779
1942H	Farmer John's Favorite Intern data structures, dp, flows, trees	3500	x54
1942G	Bessie and Cards combinatorics, dp, math	2800	x343
1942F	Farmer John's Favorite Function brute force, data structures, implementation, math	2700	x521
1942E	Farm Game combinatorics, games	2300	x1382

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