Problemset - Codeforces

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Problems

#	Name
1987F1	Interesting Problem (Easy Version) dp	2500	x1129
1987D	World is Mine dp, games	1800	x7180
1987C	Basil's Garden dp, greedy	1200	x17395
1986D	Mathematical Problem brute force, dp, greedy, implementation, math, two pointers	1400	x15238
1985H2	Maximize the Largest Component (Hard Version) data structures, dfs and similar, dp, dsu, implementation	2200	x1538
1984H	Tower Capturing combinatorics, dp, geometry	3300	x169
1984F	Reconstruction brute force, dp, math	2500	x941
1984E	Shuffle dp, greedy, trees	2400	x1405
1984C2	Magnitude (Hard Version) combinatorics, dp, greedy, math	1700	x7438
1984C1	Magnitude (Easy Version) dp, greedy, math	1300	x16682
1983G	Your Loss bitmasks, brute force, dp, trees	3000	x212
1982E	Number of k-good subarrays bitmasks, brute force, combinatorics, divide and conquer, dp, math, meet-in-the-middle	2300	x1602
1982C	Boring Day binary search, data structures, dp, greedy, two pointers	1200	x17621
1981F	Turtle and Paths on a Tree data structures, dp, trees	3000	x274
1979D	Fixing a Binary String bitmasks, brute force, constructive algorithms, dp, greedy, hashing, strings	1800	x6658
1978E	Computing Machine brute force, data structures, dp, greedy, implementation	2000	x3839
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x6785
1976F	Remove Bridges data structures, dfs and similar, dp, greedy, sortings, trees	2800	x592
1976C	Job Interview binary search, dp, greedy, implementation, two pointers	1600	x10424
1975I	Mind Bloom dp	3500	x100
1975F	Set bitmasks, brute force, combinatorics, dfs and similar, divide and conquer, dp, math	2600	x833
1975D	Paint the Tree brute force, dfs and similar, dp, greedy, shortest paths, trees	1700	x6066
1974E	Money Buys Happiness dp	1800	x8078
1973F	Maximum GCD Sum Queries bitmasks, brute force, dp, implementation, number theory	3100	x231
1973A	Chess For Three brute force, dp, implementation, math	900	x24618
1971D	Binary Cut dp, greedy, implementation, sortings, strings	1100	x25975
1970G3	Min-Fund Prison (Hard) bitmasks, dfs and similar, dp, graphs, trees	2400	x346
1970G2	Min-Fund Prison (Medium) brute force, dfs and similar, dp, graphs, trees	2200	x589
1970E3	Trails (Hard) dp, matrices	2200	x751
1970E2	Trails (Medium) dp, matrices	2000	x1313
1970E1	Trails (Easy) dp	1800	x2224
1970C3	Game on Tree (Hard) dfs and similar, dp, games, trees	1900	x1592
1970C2	Game on Tree (Medium) dfs and similar, dp, games, trees	1700	x2775
1969F	Card Pairing dp, greedy, hashing, implementation	3000	x277
1969E	Unique Array binary search, data structures, divide and conquer, dp, greedy	2400	x1391
1969C	Minimizing the Sum dp, implementation	1700	x8818
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings	2200	x1976
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings	1900	x4305
1967E2	Again Counting Arrays (Hard Version) combinatorics, dp, math	3500	x103
1967E1	Again Counting Arrays (Easy Version) combinatorics, dp, fft, math	3100	x217
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees	2300	x1783
1958H	Composite Spells *special problem, dp	2600	x79
1958A	1-3-5 *special problem, dp	1100	x1987
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x1280
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x4535
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x9731
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3951
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x1265
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x4579
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x7158
1954F	Unique Strings combinatorics, dp, math	3100	x256
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x6241
1951H	Thanos Snap binary search, dp, games, greedy, trees	3200	x284
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x4424
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x23323
1949C	Annual Ants' Gathering dfs and similar, dp, greedy, trees	1900	x1797
1949A	Grove brute force, dfs and similar, dp, geometry, probabilities	3300	x115
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x17015
1948B	Array Fix brute force, dp, greedy, implementation	1100	x23082
1946F	Nobody is needed 2-sat, data structures, dfs and similar, dp	2500	x982
1946E	Girl Permutation combinatorics, dp, math, number theory	2200	x2580
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x11056
1946B	Maximum Sum dp, greedy, math	1100	x20558
1945D	Seraphim the Owl dp, greedy	1300	x14575
1943F	Minimum Hamming Distance dp	3500	x112
1943D2	Counting Is Fun (Hard Version) combinatorics, dp	2800	x808
1943D1	Counting Is Fun (Easy Version) brute force, combinatorics, dp, math	2400	x1514
1942H	Farmer John's Favorite Intern data structures, dp, flows, trees	3500	x96
1942G	Bessie and Cards combinatorics, dp, math	2800	x456
1942D	Learning to Paint binary search, data structures, dfs and similar, dp, greedy, implementation, sortings	2100	x2823
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x9793
1941D	Rudolf and the Ball Game dfs and similar, dp, implementation	1200	x18474
1941C	Rudolf and the Ugly String dp, greedy, strings	900	x33588
1941B	Rudolf and 121 brute force, dp, greedy, math	1000	x30040
1939D	Big Persimmon *special problem, dp, games		x100
1939A	Draw Polygon Lines *special problem, constructive algorithms, dp, geometry, interactive		x24
1937B	Binary Path dp, greedy, implementation	1300	x15152
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x8263
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x19097
1933F	Turtle Mission: Robot and the Earthquake dfs and similar, dp, graphs, shortest paths	2100	x2515
1932F	Feed Cats data structures, dp, sortings	1900	x4203
1932A	Thorns and Coins dp, greedy, implementation	800	x29895
1930G	Prefix Max Set Counting data structures, dp, trees	3100	x344
1930E	2..3...4.... Wonderful! Wonderful! combinatorics, dp, math	2400	x1153
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2656
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x4162
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1722
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4858
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1742
1927G	Paint Charges data structures, dp, greedy, math	2300	x1707
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x21883
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x3649
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1731
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x12086
1926C	Vlad and a Sum of Sum of Digits dp, implementation	1200	x27015
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3700
1924F	Anti-Proxy Attendance constructive algorithms, dp, interactive, ternary search	3500	x156
1924D	Balanced Subsequences combinatorics, dp, math	2700	x1026
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x14117
1923E	Count Paths data structures, dfs and similar, dp, dsu, graphs, trees	2000	x3946