Problemset - Codeforces

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Problems

#	Name
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3427
1950F	0, 1, 2, Tree! bitmasks, brute force, greedy, implementation, trees	1700	x7477
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x11780
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x20050
1950C	Clock Conversion implementation, math	800	x34658
1950B	Upscaling implementation	800	x33088
1950A	Stair, Peak, or Neither? implementation	800	x43358
1949K	Make Triangle constructive algorithms, math	2800	x225
1949J	Amanda the Amoeba graphs, implementation, trees, two pointers	2600	x308
1949I	Disks dfs and similar, geometry, graph matchings, graphs	1800	x1112
1949H	Division Avoidance greedy, math	3100	x69
1949G	Scooter graphs, greedy	2300	x627
1949F	Dating greedy, sortings, trees	2200	x724
1949E	Damage per Second brute force, math	2900	x79
1949D	Funny or Scary? constructive algorithms	2600	x299
1949C	Annual Ants' Gathering dfs and similar, dp, greedy, trees	1900	x1144
1949B	Charming Meals binary search, brute force, greedy, sortings	1500	x1708
1949A	Grove brute force, dfs and similar, dp, geometry, probabilities	3300	x80
1948G	MST with Matching bitmasks, brute force, dsu, graph matchings, trees	3100	x603
1948F	Rare Coins combinatorics, math, probabilities	2500	x1130
1948E	Clique Partition brute force, constructive algorithms, graphs, greedy, implementation	2100	x2605
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x8147
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x14338
1948B	Array Fix brute force, dp, greedy, implementation	1100	x20386
1948A	Special Characters brute force, constructive algorithms	800	x26192
1946F	Nobody is needed 2-sat, data structures, dfs and similar, dp	2500	x766
1946E	Girl Permutation combinatorics, dp, math, number theory	2200	x2069
1946D	Birthday Gift bitmasks, brute force, constructive algorithms, greedy, implementation	1900	x3984
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x9015
1946B	Maximum Sum dp, greedy, math	1100	x17761
1946A	Median of an Array greedy, implementation, sortings	800	x23386
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x484
1945G	Cook and Porridge binary search, constructive algorithms, data structures, implementation	2500	x622
1945F	Kirill and Mushrooms data structures, sortings	1900	x3547
1945E	Binary Search binary search, constructive algorithms, greedy	1700	x6884
1945D	Seraphim the Owl dp, greedy	1300	x12046
1945C	Left and Right Houses brute force	1200	x12735
1945B	Fireworks math, number theory	900	x19526
1945A	Setting up Camp greedy, math	800	x24545
1944B	Equal XOR bitmasks, constructive algorithms	1100	x14163
1944A	Destroying Bridges graphs, greedy, math	800	x21087
1943F	Minimum Hamming Distance dp	3500	x77
1943E2	MEX Game 2 (Hard Version) binary search, greedy, two pointers	3300	x227
1943E1	MEX Game 2 (Easy Version) binary search, brute force, greedy	2900	x357
1943D2	Counting Is Fun (Hard Version) combinatorics, dp	2800	x590
1943D1	Counting Is Fun (Easy Version) brute force, combinatorics, dp, math	2400	x1244
1943C	Tree Compass constructive algorithms, dfs and similar, greedy, trees	2300	x1786
1943B	Non-Palindromic Substring hashing, implementation, math, strings	2000	x3260
1943A	MEX Game 1 games, greedy	1300	x15214
1942H	Farmer John's Favorite Intern data structures, dp, flows, trees	3500	x59
1942G	Bessie and Cards combinatorics, dp, math	2800	x364
1942F	Farmer John's Favorite Function brute force, data structures, implementation, math	2700	x553
1942E	Farm Game combinatorics, games	2300	x1431
1942D	Learning to Paint binary search, data structures, dfs and similar, dp, greedy, implementation, sortings	2100	x2400
1942C2	Bessie's Birthday Cake (Hard Version) geometry, greedy, math	1700	x5442
1942C1	Bessie's Birthday Cake (Easy Version) geometry, greedy, math	1300	x9432
1942B	Bessie and MEX constructive algorithms, math	1100	x12165
1942A	Farmer John's Challenge constructive algorithms, math	800	x15493
1941G	Rudolf and Subway constructive algorithms, dfs and similar, graphs, shortest paths	2000	x2934
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x5163
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x8117
1941D	Rudolf and the Ball Game dfs and similar, dp, implementation	1200	x16522
1941C	Rudolf and the Ugly String dp, greedy, strings	900	x29583
1941B	Rudolf and 121 brute force, dp, greedy, math	1000	x26330
1941A	Rudolf and the Ticket brute force, math	800	x38797
1940D	Almost Certainly *special problem, constructive algorithms, data structures, sortings		x123
1940C	Burenka and Pether *special problem, data structures, dfs and similar, divide and conquer, dsu, graphs, sortings, trees		x32
1940B	Three Arrays *special problem, constructive algorithms, implementation, sortings		x173
1940A	Parallel Universes *special problem, constructive algorithms, dfs and similar, dsu, graphs		x78
1939D	Big Persimmon *special problem, dp, games		x59
1939C	More Gifts *special problem, dfs and similar, two pointers		x273
1939B	Evidence Board *special problem, constructive algorithms, dfs and similar, graphs, trees		x209
1939A	Draw Polygon Lines *special problem, constructive algorithms, dp, geometry, interactive		x14
1938M	Zig-zag	3500	x45
1938L	XOR Operations	2800	x247
1938K	Tree Quiz	2400	x531
1938J	There and Back Again	2100	x1110
1938I	Symmetric Boundary	2800	x52
1938H	Pho Restaurant	1600	x1856
1938G	Personality Test	2300	x866
1938F	Forming Groups	2400	x637
1938E	Duplicates	2200	x856
1938D	Bánh Bò	3300	x77
1938C	Bit Counting Sequence	1900	x1248
1938B	Attraction Score	3000	x146
1938A	Antiparticle Antiphysics	3500	x37
1937B	Binary Path dp, greedy, implementation	1300	x13027
1937A	Shuffle Party implementation, math	800	x21388
1936F	Grand Finale: Circles binary search, geometry	3300	x66
1936E	Yet Yet Another Permutation Problem divide and conquer, fft, math	3400	x94
1936D	Bitwise Paradox binary search, bitmasks, data structures, greedy, two pointers	3100	x409
1936C	Pokémon Arena data structures, graphs, greedy, implementation, shortest paths, sortings	2400	x1079
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2425
1936A	Bitwise Operation Wizard bitmasks, constructive algorithms, greedy, interactive, math	1700	x6538
1935F	Andrey's Tree binary search, constructive algorithms, data structures, dfs and similar, dsu, greedy, implementation, trees	2800	x391
1935E	Distance Learning Courses in MAC bitmasks, brute force, data structures, greedy, math	2400	x1165
1935D	Exam in MAC binary search, combinatorics, implementation, math	1800	x7294
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x7095
1935B	Informatics in MAC constructive algorithms	1200	x16361
1935A	Entertainment in MAC constructive algorithms, strings	800	x25375