Problemset - Codeforces

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two pointers

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Problems

#	Name
1994C	Hungry Games binary search, dp, two pointers		x7639
1992F	Valuable Cards brute force, dp, greedy, number theory, two pointers	1900	x4318
1990F	Polygonal Segments data structures, geometry, two pointers		x59
1989D	Smithing Skill brute force, data structures, dp, greedy, math, sortings, two pointers	1900	x4830
1986D	Mathematical Problem brute force, dp, greedy, implementation, math, two pointers	1400	x13191
1983F	array-value binary search, bitmasks, data structures, greedy, two pointers	2500	x930
1982C	Boring Day binary search, data structures, dp, greedy, two pointers	1200	x15014
1979E	Manhattan Triangle binary search, constructive algorithms, data structures, geometry, implementation, two pointers	2400	x1227
1978F	Large Graph data structures, dfs and similar, dsu, graphs, number theory, two pointers	2400	x1117
1976D	Invertible Bracket Sequences binary search, combinatorics, data structures, divide and conquer, implementation, two pointers	2000	x3647
1976C	Job Interview binary search, dp, greedy, implementation, two pointers	1600	x9165
1974F	Cutting Game binary search, brute force, data structures, implementation, sortings, two pointers	1900	x3192
1973B	Cat, Fox and the Lonely Array binary search, bitmasks, data structures, greedy, math, two pointers	1300	x12805
1972A	Contest Proposal brute force, greedy, two pointers	800	x21531
1968B	Prefiquence greedy, two pointers	800	x26284
1967D	Long Way to be Non-decreasing binary search, dfs and similar, graphs, implementation, shortest paths, two pointers	2800	x557
1955D	Inaccurate Subsequence Search data structures, two pointers	1400	x14252
1949J	Amanda the Amoeba graphs, implementation, trees, two pointers	2600	x356
1948D	Tandem Repeats? brute force, strings, two pointers	1700	x8777
1943E2	MEX Game 2 (Hard Version) binary search, greedy, two pointers	3300	x274
1941F	Rudolf and Imbalance binary search, greedy, sortings, two pointers	1800	x5572
1941E	Rudolf and k Bridges binary search, data structures, dp, two pointers	1600	x8919
1939C	More Gifts *special problem, dfs and similar, two pointers		x286
1936D	Bitwise Paradox binary search, bitmasks, data structures, greedy, two pointers	3100	x463
1936B	Pinball binary search, data structures, implementation, math, two pointers	2000	x2633
1932C	LR-remainders brute force, data structures, implementation, math, two pointers	1400	x14814
1928B	Equalize binary search, greedy, sortings, two pointers	1200	x16355
1927E	Klever Permutation constructive algorithms, math, two pointers	1400	x13217
1927D	Find the Different Ones! binary search, brute force, data structures, dp, dsu, greedy, two pointers	1300	x19790
1923D	Slimes binary search, constructive algorithms, data structures, greedy, two pointers	1800	x6333
1921D	Very Different Array data structures, greedy, sortings, two pointers	1100	x20829
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4511
1912I	Innovative Washing Machine geometry, math, two pointers	3300	x56
1905D	Cyclic MEX data structures, implementation, math, two pointers	2000	x3654
1904C	Array Game binary search, brute force, data structures, sortings, two pointers	1400	x11731
1904B	Collecting Game binary search, dp, greedy, sortings, two pointers	1100	x14067
1901F	Landscaping binary search, geometry, two pointers	2900	x148
1899G	Unusual Entertainment data structures, dfs and similar, dsu, shortest paths, sortings, trees, two pointers	1900	x3045
1899C	Yarik and Array dp, greedy, two pointers	1100	x19555
1898E	Sofia and Strings data structures, greedy, sortings, strings, two pointers	2200	x2160
1896D	Ones and Twos binary search, data structures, divide and conquer, math, two pointers	1700	x5464
1896B	AB Flipping greedy, strings, two pointers	900	x14132
1895E	Infinite Card Game binary search, brute force, data structures, dfs and similar, dp, dsu, games, graphs, greedy, sortings, two pointers	2300	x1512
1893B	Neutral Tonality constructive algorithms, greedy, sortings, two pointers	1700	x8484
1891C	Smilo and Monsters binary search, constructive algorithms, greedy, sortings, two pointers	1500	x12289
1887D	Split binary search, data structures, divide and conquer, dsu, math, trees, two pointers	2700	x846
1887C	Minimum Array binary search, brute force, constructive algorithms, data structures, greedy, hashing, two pointers	2400	x1655
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1390
1884B	Haunted House binary search, greedy, math, two pointers	1100	x12289
1883G2	Dances (Hard Version) binary search, greedy, sortings, two pointers	1900	x5131
1883G1	Dances (Easy version) binary search, greedy, two pointers	1400	x10052
1876D	Lexichromatography combinatorics, dfs and similar, dsu, graphs, two pointers	2500	x840
1873F	Money Trees binary search, greedy, math, two pointers	1300	x14744
1873D	1D Eraser greedy, implementation, two pointers	800	x34025
1870C	Colorful Table binary search, data structures, dp, implementation, math, two pointers	1300	x11152
1866I	Imagination Castle dp, games, two pointers	2300	x690
1863E	Speedrun brute force, dfs and similar, dp, graphs, greedy, math, sortings, two pointers	2100	x2673
1858D	Trees and Segments brute force, data structures, dp, greedy, two pointers	2200	x2756
1852B	Imbalanced Arrays constructive algorithms, graphs, greedy, math, sortings, two pointers	1800	x4301
1851G	Vlad and the Mountains binary search, data structures, dsu, graphs, implementation, sortings, trees, two pointers	2000	x3100
1851B	Parity Sort greedy, sortings, two pointers	800	x28776
1849E	Max to the Right of Min binary search, data structures, divide and conquer, dp, dsu, two pointers	2300	x1573
1849D	Array Painting constructive algorithms, greedy, two pointers	1700	x8165
1847B	Hamon Odyssey bitmasks, greedy, two pointers	1000	x19616
1845D	Rating System binary search, brute force, data structures, dp, dsu, greedy, math, two pointers	1800	x7569
1843E	Tracking Segments binary search, brute force, data structures, two pointers	1600	x11658
1843B	Long Long greedy, math, two pointers	800	x28560
1843A	Sasha and Array Coloring greedy, sortings, two pointers	800	x33671
1841F	Monocarp and a Strategic Game geometry, sortings, two pointers	2700	x480
1841D	Pairs of Segments data structures, greedy, sortings, two pointers	2000	x4266
1840C	Ski Resort combinatorics, math, two pointers	1000	x26128
1840A	Cipher Shifer implementation, strings, two pointers	800	x33439
1835B	Lottery binary search, brute force, greedy, math, two pointers	2500	x924
1833F	Ira and Flamenco combinatorics, constructive algorithms, data structures, implementation, math, sortings, two pointers	1700	x7059
1832B	Maximum Sum brute force, sortings, two pointers	1100	x20768
1827B1	Range Sorting (Easy Version) binary search, dp, dsu, greedy, trees, two pointers	2000	x3780
1827A	Counting Orders combinatorics, math, sortings, two pointers	1100	x18243
1820B	JoJo's Incredible Adventures math, strings, two pointers	1100	x14048
1819D	Misha and Apples brute force, data structures, dp, two pointers	2800	x611
1819B	The Butcher geometry, greedy, implementation, sortings, two pointers	1900	x3506
1814D	Balancing Weapons binary search, brute force, data structures, math, two pointers	2500	x846
1811G2	Vlad and the Nice Paths (hard version) binary search, combinatorics, data structures, dp, math, two pointers	2200	x1694
1808D	Petya, Petya, Petr, and Palindromes binary search, brute force, data structures, two pointers	2100	x2254
1805F2	Survival of the Weakest (hard version) greedy, math, sortings, two pointers	3100	x335
1805E	There Should Be a Lot of Maximums brute force, data structures, dfs and similar, dp, trees, two pointers	2300	x1561
1797E	Li Hua and Array brute force, data structures, dsu, math, number theory, two pointers	2300	x1231
1796D	Maximum Subarray data structures, dp, greedy, two pointers	2000	x4134
1794C	Scoring Subsequences binary search, greedy, math, two pointers	1300	x13132
1793E	Velepin and Marketing binary search, data structures, dp, greedy, sortings, two pointers	2600	x957
1793D	Moscow Gorillas binary search, dp, greedy, implementation, math, two pointers	1800	x5949
1793C	Dora and Search constructive algorithms, data structures, two pointers	1200	x19173
1792C	Min Max Sort binary search, brute force, greedy, math, two pointers	1500	x13712
1791C	Prepend and Append implementation, two pointers	800	x42753
1789B	Serval and Inversion Magic brute force, implementation, strings, two pointers	800	x15998
1788D	Moving Dots binary search, brute force, combinatorics, math, two pointers	2000	x3812
1787I	Treasure Hunt data structures, divide and conquer, two pointers	3400	x151
1781E	Rectangle Shrinking binary search, brute force, data structures, greedy, implementation, two pointers	2300	x1288
1777C	Quiz Master binary search, math, number theory, sortings, two pointers	1700	x8233
1776H	Beppa and SwerChat two pointers	1300	x6209
1774D	Same Count One brute force, constructive algorithms, greedy, implementation, two pointers	1600	x7662

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