Problemset - Codeforces

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Codeforces Round 940 (Div. 2)
5 days

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Problems

#	Name
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x109
1956E2	Nene vs. Monsters (Hard Version) brute force, implementation, math	2700	x355
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x777
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x2059
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x7683
1956B	Nene and the Card Game games, greedy	800	x14786
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x15018
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x769
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x2562
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x4796
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x5825
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x10767
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x14837
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x20380
1955A	Yogurt Sale math	800	x30855
1954F	Unique Strings combinatorics, dp, math	3100	x116
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1186
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x3691
1954C	Long Multiplication greedy, math, number theory	1200	x12420
1954B	Make It Ugly implementation, math	1200	x12584
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x16925
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x653
1952I	Dark Matter bitmasks, geometry		x294
1952H	Palindrome implementation, strings		x301
1952G	Mathematician Takeover binary search, dfs and similar, math		x863
1952F	Grid brute force		x1572
1952E	Sweep Line combinatorics, games, math		x185
1952D	Are You a Procrastinator? implementation		x3931
1952C	They Have Fooled brute force, schedules		x2607
1952B	Is it stated? strings		x9946
1952A	Are You a Robot, Again? strings		x10978
1951I	Growing Trees binary search, constructive algorithms, flows, graphs, greedy	3200	x29
1951H	Thanos Snap binary search, dp, games, greedy, trees	3200	x155
1951G	Clacking Balls combinatorics, math, probabilities	3100	x176
1951F	Inversion Composition constructive algorithms, data structures, greedy	2500	x568
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x2657
1951D	Buying Jewels constructive algorithms, greedy, math	2000	x4228
1951C	Ticket Hoarding greedy, math, sortings	1400	x8348
1951B	Battle Cows binary search, data structures, greedy	1200	x10659
1951A	Dual Trigger constructive algorithms, greedy, math	900	x14750
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3014
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x6793
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x10757
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x18733
1950C	Clock Conversion implementation, math	800	x32575
1950B	Upscaling implementation	800	x30914
1950A	Stair, Peak, or Neither? implementation	800	x40066
1949K	Make Triangle constructive algorithms, math		x210
1949J	Amanda the Amoeba graphs, implementation, trees, two pointers		x289
1949I	Disks dfs and similar, geometry, graph matchings, graphs		x1015
1949H	Division Avoidance greedy, math		x61
1949G	Scooter graphs, greedy		x581
1949F	Dating greedy, sortings, trees		x662
1949E	Damage per Second brute force, math		x73
1949D	Funny or Scary? constructive algorithms		x285
1949C	Annual Ants' Gathering dfs and similar, dp, greedy, trees		x1030
1949B	Charming Meals binary search, brute force, greedy, sortings		x1478
1949A	Grove brute force, dfs and similar, dp, geometry, probabilities		x75
1948G	MST with Matching bitmasks, brute force, dsu, graph matchings, trees	3100	x551
1948F	Rare Coins combinatorics, math, probabilities	2500	x1025
1948E	Clique Partition brute force, constructive algorithms, graphs, greedy, implementation	2100	x2440
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x7785
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x13674
1948B	Array Fix brute force, dp, greedy, implementation	1100	x19689
1948A	Special Characters brute force, constructive algorithms	800	x25397
1946F	Nobody is needed 2-sat, data structures, dfs and similar, dp	2500	x705
1946E	Girl Permutation combinatorics, dp, math, number theory	2200	x1926
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x3744
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x8493
1946B	Maximum Sum dp, greedy, math	1100	x17011
1946A	Median of an Array greedy, implementation, sortings	800	x22540
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x444
1945G	Cook and Porridge binary search, constructive algorithms, data structures, implementation	2500	x572
1945F	Kirill and Mushrooms data structures, sortings	1900	x3358
1945E	Binary Search binary search, constructive algorithms, greedy	1700	x6524
1945D	Seraphim the Owl dp, greedy	1300	x11392
1945C	Left and Right Houses brute force	1200	x12074
1945B	Fireworks math, number theory	900	x18620
1945A	Setting up Camp greedy, math	800	x23409
1944B	Equal XOR bitmasks, constructive algorithms	1100	x13629
1944A	Destroying Bridges graphs, greedy, math	800	x20290
1943F	Minimum Hamming Distance dp	3500	x60
1943E2	MEX Game 2 (Hard Version) binary search, greedy, two pointers	3300	x183
1943E1	MEX Game 2 (Easy Version) binary search, brute force, greedy	2900	x312
1943D2	Counting Is Fun (Hard Version) combinatorics, dp	2800	x529
1943D1	Counting Is Fun (Easy Version) brute force, combinatorics, dp, math	2400	x1143
1943C	Tree Compass constructive algorithms, dfs and similar, greedy, trees	2300	x1666
1943B	Non-Palindromic Substring hashing, implementation, math, strings	2000	x3059
1943A	MEX Game 1 games, greedy	1300	x14503
1942H	Farmer John's Favorite Intern data structures, dp, flows, trees	3500	x51
1942G	Bessie and Cards combinatorics, dp, math	2800	x330
1942F	Farmer John's Favorite Function brute force, data structures, implementation, math	2700	x492
1942E	Farm Game combinatorics, games	2300	x1344
1942D	Learning to Paint binary search, data structures, dfs and similar, dp, greedy, implementation, sortings	2100	x2248
1942C2	Bessie's Birthday Cake (Hard Version) geometry, greedy, math	1700	x5178
1942C1	Bessie's Birthday Cake (Easy Version) geometry, greedy, math	1300	x8910
1942B	Bessie and MEX constructive algorithms, math	1100	x11597
1942A	Farmer John's Challenge constructive algorithms, math	800	x14839
1941G	Rudolf and Subway constructive algorithms, dfs and similar, graphs, shortest paths	2000	x2782
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x4969

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