Problemset - Codeforces

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Problems

#	Name
1970G3	Min-Fund Prison (Hard) bitmasks, dfs and similar, dp, graphs, trees		x139
1970G2	Min-Fund Prison (Medium) brute force, dfs and similar, dp, graphs, trees		x254
1970E3	Trails (Hard) dp, matrices		x282
1970E2	Trails (Medium) dp, matrices		x457
1970E1	Trails (Easy) dp		x617
1970C3	Game on Tree (Hard) dfs and similar, dp, games, trees		x522
1970C2	Game on Tree (Medium) dfs and similar, dp, games, trees		x777
1969F	Card Pairing dp, greedy, hashing, implementation	3000	x89
1969E	Unique Array binary search, data structures, divide and conquer, dp, greedy	2400	x751
1969C	Minimizing the Sum dp, implementation	1700	x5180
1968G2	Division + LCP (hard version) binary search, brute force, data structures, dp, hashing, math, string suffix structures, strings		x1068
1968G1	Division + LCP (easy version) binary search, data structures, dp, hashing, string suffix structures, strings		x2512
1967E2	Again Counting Arrays (Hard Version) combinatorics, dp		x41
1967E1	Again Counting Arrays (Easy Version) combinatorics, dp, fft, math		x101
1967C	Fenwick Tree bitmasks, brute force, combinatorics, data structures, dp, math, trees		x1096
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x948
1957D	A BIT of an Inequality bitmasks, brute force, dp, math	1900	x3410
1957C	How Does the Rook Move? combinatorics, dp, math	1600	x7187
1956D	Nene and the Mex Operator bitmasks, brute force, constructive algorithms, divide and conquer, dp, greedy, implementation, math	2000	x3072
1955H	The Most Reckless Defense bitmasks, brute force, constructive algorithms, dp, flows, graph matchings, shortest paths	2300	x981
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3344
1955F	Unfair Game dp, games, greedy, math, schedules	1800	x5742
1954F	Unique Strings combinatorics, dp, math	3100	x195
1954D	Colored Balls combinatorics, dp, math, sortings	1800	x4754
1951H	Thanos Snap binary search, dp, games, greedy, trees	3200	x192
1950G	Shuffling Songs bitmasks, dfs and similar, dp, graphs, hashing, implementation, strings	1900	x3406
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x19978
1949C	Annual Ants' Gathering dfs and similar, dp, greedy, trees	1900	x1132
1949A	Grove brute force, dfs and similar, dp, geometry, probabilities	3300	x80
1948C	Arrow Path brute force, constructive algorithms, dfs and similar, dp, graphs, shortest paths	1300	x14290
1948B	Array Fix brute force, dp, greedy, implementation	1100	x20349
1946F	Nobody is needed 2-sat, data structures, dfs and similar, dp	2500	x765
1946E	Girl Permutation combinatorics, dp, math, number theory	2200	x2067
1946C	Tree Cutting binary search, dp, greedy, implementation, trees	1600	x8994
1946B	Maximum Sum dp, greedy, math	1100	x17729
1945D	Seraphim the Owl dp, greedy	1300	x12005
1943F	Minimum Hamming Distance dp	3500	x76
1943D2	Counting Is Fun (Hard Version) combinatorics, dp	2800	x586
1943D1	Counting Is Fun (Easy Version) brute force, combinatorics, dp, math	2400	x1240
1942H	Farmer John's Favorite Intern data structures, dp, flows, trees	3500	x59
1942G	Bessie and Cards combinatorics, dp, math	2800	x364
1942D	Learning to Paint binary search, data structures, dfs and similar, dp, greedy, implementation, sortings	2100	x2397
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x8104
1941D	Rudolf and the Ball Game dfs and similar, dp, implementation	1200	x16501
1941C	Rudolf and the Ugly String dp, greedy, strings	900	x29542
1941B	Rudolf and 121 brute force, dp, greedy, math	1000	x26291
1939D	Big Persimmon *special problem, dp, games		x59
1939A	Draw Polygon Lines *special problem, constructive algorithms, dp, geometry, interactive		x14
1937B	Binary Path dp, greedy, implementation	1300	x13008
1935C	Messenger in MAC binary search, brute force, constructive algorithms, data structures, dp, greedy, sortings	1800	x7084
1934B	Yet Another Coin Problem brute force, dp, greedy, math	1200	x16555
1933F	Turtle Mission: Robot and the Earthquake dfs and similar, dp, graphs, shortest paths	2100	x2194
1932F	Feed Cats data structures, dp, sortings	1900	x3364
1932A	Thorns and Coins dp, greedy, implementation	800	x26591
1930G	Prefix Max Set Counting data structures, dp, trees	3100	x245
1930E	2..3...4.... Wonderful! Wonderful! combinatorics, dp, math	2400	x982
1930D2	Sum over all Substrings (Hard Version) bitmasks, divide and conquer, dp, dsu, greedy, implementation, strings	2100	x2356
1930D1	Sum over all Substrings (Easy Version) brute force, dp, greedy, strings	1800	x3672
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1502
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4151
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1534
1927G	Paint Charges data structures, dp, greedy, math	2300	x1486
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x18196
1926G	Vlad and Trouble at MIT dfs and similar, dp, flows, graphs, greedy, implementation, trees	1900	x2926
1926F	Vlad and Avoiding X bitmasks, brute force, dfs and similar, dp, implementation	2200	x1472
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x9936
1926C	Vlad and a Sum of Sum of Digits dp, implementation	1200	x22960
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3205
1924F	Anti-Proxy Attendance constructive algorithms, dp, interactive, ternary search	3500	x127
1924D	Balanced Subsequences combinatorics, dp, math	2700	x768
1924A	Did We Get Everything Covered? constructive algorithms, dp, greedy, shortest paths, strings	1500	x12296
1923E	Count Paths data structures, dfs and similar, dp, dsu, graphs, trees	2000	x3158
1923B	Monsters Attack! dp, greedy, implementation	1100	x16099
1922F	Replace on Segment dp, graph matchings	2500	x1161
1921G	Mischievous Shooter brute force, data structures, divide and conquer, dp, implementation	2200	x1116
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3428
1920E	Counting Binary Strings combinatorics, dp, math	2100	x2349
1919F2	Wine Factory (Hard Version) data structures, dp, flows, greedy, matrices	2800	x737
1919E	Counting Prefixes combinatorics, constructive algorithms, dp, implementation, math	2600	x772
1919C	Grouping Increases data structures, dp, greedy	1400	x16768
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4243
1917F	Construct Tree bitmasks, constructive algorithms, dp, trees	2500	x894
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1653
1917B	Erase First or Second Letter brute force, combinatorics, data structures, dp, strings	1100	x19337
1916H2	Matrix Rank (Hard Version) combinatorics, dp, math, matrices, string suffix structures	2700	x502
1916H1	Matrix Rank (Easy Version) brute force, combinatorics, dp, math, matrices	2700	x584
1916G	Optimizations From Chelsu divide and conquer, dp, number theory, trees	3500	x132
1914G2	Light Bulbs (Hard Version) combinatorics, data structures, dfs and similar, dp, graphs, hashing	2300	x1219
1914G1	Light Bulbs (Easy Version) brute force, combinatorics, dfs and similar, dp, dsu, graphs, math, trees	2100	x1667
1914F	Programming Competition dfs and similar, dp, graph matchings, greedy, trees	1900	x3667
1914D	Three Activities brute force, dp, greedy, implementation, sortings	1200	x18094
1913D	Array Collapse data structures, divide and conquer, dp, trees	2100	x2697
1912K	Kim's Quest bitmasks, combinatorics, dp	1800	x2020
1910I	Inverse Problem *special problem, combinatorics, dp	2700	x40
1910E	Maximum Sum Subarrays *special problem, dp	2100	x169
1909I	Short Permutation Problem combinatorics, dp, fft, math	1900	x73
1909F2	Small Permutation Problem (Hard Version) combinatorics, dp, math	2500	x827
1909F1	Small Permutation Problem (Easy Version) brute force, combinatorics, dp, math	2200	x1632
1906J	Count BFS Graph combinatorics, dp	2100	x630
1906H	Twin Friends combinatorics, dp	2200	x603

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