Problemset - Codeforces

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Codeforces Round 950 (Div. 3)
05:55:32
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Problems

#	Name
1958J	Necromancer *special problem	3200	x15
1958I	Equal Trees *special problem, graphs, meet-in-the-middle	3100	x22
1958H	Composite Spells *special problem, dp	2600	x64
1958G	Observation Towers *special problem	2400	x91
1958F	Narrow Paths *special problem, combinatorics	2000	x153
1958E	Yet Another Permutation Constructive *special problem, constructive algorithms	1900	x206
1958D	Staircase *special problem	1600	x368
1958C	Firewood *special problem	1500	x499
1958B	Clock in the Pool *special problem, math	1400	x677
1958A	1-3-5 *special problem, dp	1100	x1147
1957F2	Frequency Mismatch (Hard Version) binary search, data structures, dfs and similar, hashing, probabilities, trees	2700	x308
1957F1	Frequency Mismatch (Easy Version) binary search, data structures, divide and conquer, hashing, probabilities, trees	2600	x367
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x1055
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x3851
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x8137
1957B	A BIT of a Construction bitmasks, constructive algorithms, greedy, implementation	1100	x15849
1957A	Stickogon constructive algorithms, greedy	800	x20940
1956F	Nene and the Passing Game constructive algorithms, data structures, dsu, graphs, sortings	3000	x286
1956E2	Nene vs. Monsters (Hard Version) brute force, greedy, implementation, math	2700	x713
1956E1	Nene vs. Monsters (Easy Version) brute force, implementation, math	2500	x1283
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3386
1956C	Nene's Magical Matrix constructive algorithms, greedy, math	1600	x11212
1956B	Nene and the Card Game games, greedy	800	x19535
1956A	Nene's Game binary search, brute force, data structures, games, greedy	800	x19670
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x1080
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3720
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x6161
1955E	Long Inversions brute force, greedy, implementation, sortings	1700	x7513
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x13360
1955C	Inhabitant of the Deep Sea greedy, implementation, math	1300	x18649
1955B	Progressive Square constructive algorithms, data structures, implementation, sortings	1000	x24735
1955A	Yogurt Sale math	800	x38107
1954F	Unique Strings combinatorics, dp, math	3100	x215
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1885
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x5191
1954C	Long Multiplication greedy, math, number theory	1200	x16700
1954B	Make It Ugly implementation, math	1200	x16296
1954A	Painting the Ribbon constructive algorithms, greedy, math	900	x21358
1953A	Accuracy-Preserving Summation Algorithm *special problem
1952J	Help, what does it mean to be "Based" brute force, constructive algorithms, expression parsing, implementation, sortings		x707
1952I	Dark Matter bitmasks, geometry		x383
1952H	Palindrome implementation, strings		x362
1952G	Mathematician Takeover binary search, dfs and similar, math		x952
1952F	Grid brute force		x1669
1952E	Sweep Line combinatorics, games, math		x215
1952D	Are You a Procrastinator? implementation		x4242
1952C	They Have Fooled brute force, schedules		x2757
1952B	Is it stated? strings		x10425
1952A	Are You a Robot, Again? strings		x11511
1951I	Growing Trees binary search, constructive algorithms, flows, graphs, greedy	3200	x61
1951H	Thanos Snap binary search, dp, games, greedy, trees	3200	x211
1951G	Clacking Balls combinatorics, math, probabilities	3100	x269
1951F	Inversion Composition constructive algorithms, data structures, greedy	2500	x670
1951E	No Palindromes brute force, constructive algorithms, divide and conquer, greedy, hashing, implementation, math, strings	2000	x3127
1951D	Buying Jewels constructive algorithms, greedy, math	2000	x4837
1951C	Ticket Hoarding greedy, math, sortings	1400	x10012
1951B	Battle Cows binary search, data structures, greedy	1200	x12589
1951A	Dual Trigger constructive algorithms, greedy, math	900	x17104
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3659
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x7901
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x12480
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x20904
1950C	Clock Conversion implementation, math	800	x35930
1950B	Upscaling implementation	800	x34307
1950A	Stair, Peak, or Neither? implementation	800	x45349
1949K	Make Triangle constructive algorithms, math	2800	x255
1949J	Amanda the Amoeba graphs, implementation, trees, two pointers	2600	x325
1949I	Disks dfs and similar, geometry, graph matchings, graphs	1800	x1263
1949H	Division Avoidance greedy, math	3100	x78
1949G	Scooter graphs, greedy	2300	x664
1949F	Dating greedy, sortings, trees	2200	x800
1949E	Damage per Second brute force, math	2900	x89
1949D	Funny or Scary? constructive algorithms	2600	x314
1949C	Annual Ants' Gathering dfs and similar, dp, greedy, trees	1900	x1323
1949B	Charming Meals binary search, brute force, greedy, sortings	1500	x2134
1949A	Grove brute force, dfs and similar, dp, geometry, probabilities	3300	x90
1948G	MST with Matching bitmasks, brute force, dsu, graph matchings, trees	3100	x632
1948F	Rare Coins combinatorics, math, probabilities	2500	x1173
1948E	Clique Partition brute force, constructive algorithms, graphs, greedy, implementation	2100	x2682
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x8403
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x14894
1948B	Array Fix brute force, dp, greedy, implementation	1100	x20920
1948A	Special Characters brute force, constructive algorithms	800	x26764
1946F	Nobody is needed 2-sat, data structures, dfs and similar, dp	2500	x798
1946E	Girl Permutation combinatorics, dp, math, number theory	2200	x2167
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x4180
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x9444
1946B	Maximum Sum dp, greedy, math	1100	x18452
1946A	Median of an Array greedy, implementation, sortings	800	x24154
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x511
1945G	Cook and Porridge binary search, constructive algorithms, data structures, implementation	2500	x648
1945F	Kirill and Mushrooms data structures, sortings	1900	x3691
1945E	Binary Search binary search, constructive algorithms, greedy	1700	x7189
1945D	Seraphim the Owl dp, greedy	1300	x12654
1945C	Left and Right Houses brute force	1200	x13316
1945B	Fireworks math, number theory	900	x20298
1945A	Setting up Camp greedy, math	800	x25357
1944B	Equal XOR bitmasks, constructive algorithms	1100	x14687
1944A	Destroying Bridges graphs, greedy, math	800	x21719
1943F	Minimum Hamming Distance dp	3500	x84