Problemset - Codeforces

→ Pay attention

Before contest
CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
2 days
Register now »

*has extra registration

→ Filter Problems

Difficulty: —

implementation

Add tag

Problems

#	Name
1926C	Vlad and a Sum of Sum of Digits dp, implementation	1200	x27009
1926B	Vlad and Shapes geometry, implementation	800	x32731
1926A	Vlad and the Best of Five implementation	800	x49016
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2608
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x378
1923B	Monsters Attack! dp, greedy, implementation	1100	x17828
1923A	Moving Chips greedy, implementation	800	x24811
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5758
1922C	Closest Cities greedy, implementation, math	1300	x18707
1922A	Tricky Template constructive algorithms, implementation, strings	800	x27094
1921G	Mischievous Shooter brute force, data structures, divide and conquer, dp, implementation	2200	x1260
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3930
1921B	Arranging Cats greedy, implementation	800	x33971
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5664
1919E	Counting Prefixes combinatorics, constructive algorithms, dp, implementation, math	2600	x886
1918F	Caterpillar on a Tree dfs and similar, graphs, greedy, implementation, sortings, trees	2500	x895
1918E	ace5 and Task Order constructive algorithms, divide and conquer, implementation, interactive, probabilities, sortings	2200	x1753
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4854
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x14200
1918B	Minimize Inversions constructive algorithms, data structures, greedy, implementation, sortings	900	x24038
1918A	Brick Wall constructive algorithms, greedy, implementation, math	800	x30385
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1809
1917C	Watering an Array brute force, greedy, implementation, math	1600	x10602
1916C	Training Before the Olympiad constructive algorithms, games, greedy, implementation, math	1200	x17999
1916A	2023 constructive algorithms, implementation, math, number theory	800	x26155
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x6536
1915D	Unnatural Language Processing greedy, implementation, strings	900	x30593
1915C	Can I Square? binary search, implementation	800	x43487
1915B	Not Quite Latin Square bitmasks, brute force, implementation	800	x42843
1915A	Odd One Out bitmasks, implementation	800	x58496
1914D	Three Activities brute force, dp, greedy, implementation, sortings	1200	x22358
1914A	Problemsolving Log implementation, strings	800	x32051
1913A	Rating Increase implementation	800	x25342
1912E	Evaluate It and Back Again constructive algorithms, implementation, math	2200	x950
1912A	Accumulator Apex data structures, implementation, sortings	1900	x2155
1910C	Poisonous Swamp special problem, special problem, implementation, implementation	1600	x638
1910A	Username *special problem, implementation	1100	x1794
1909A	Distinct Buttons implementation, math	800	x17988
1907G	Lights brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	2200	x1976
1907B	YetnotherrokenKeoard data structures, implementation, strings	1000	x26016
1907A	Rook implementation	800	x37095
1905D	Cyclic MEX data structures, implementation, math, two pointers	2000	x3915
1904F	Beautiful Tree data structures, dfs and similar, graphs, implementation, trees	2800	x385
1904E	Tree Queries data structures, dfs and similar, graphs, implementation, trees	2500	x1032
1904D2	Set To Max (Hard Version) constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings	1800	x4510
1904A	Forked! brute force, implementation	900	x20647
1902F	Trees and XOR Queries Again data structures, dfs and similar, divide and conquer, graphs, implementation, math, trees	2400	x1045
1902D	Robot Queries binary search, data structures, dp, implementation	1900	x4206
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x7125
1900F	Local Deletions binary search, data structures, implementation	2800	x293
1900E	Transitive Graph dfs and similar, dp, dsu, graphs, implementation	2100	x2112
1900A	Cover in Water constructive algorithms, greedy, implementation, strings	800	x29194
1899E	Queue Sort greedy, implementation, sortings	1300	x15743
1899B	250 Thousand Tons of TNT brute force, implementation, number theory	1100	x21120
1898A	Milica and String brute force, implementation, strings	800	x16134
1896G	Pepe Racing constructive algorithms, implementation, interactive, sortings	3200	x346
1896F	Bracket Xoring constructive algorithms, greedy, implementation, math	2600	x732
1895C	Torn Lucky Ticket brute force, dp, hashing, implementation, math	1400	x11369
1894A	Secret Sport implementation, strings	800	x19049
1893C	Freedom of Choice brute force, greedy, implementation	2000	x2741
1893A	Anonymous Informant brute force, dfs and similar, graphs, implementation	1400	x12539
1891E	Brukhovich and Exams brute force, greedy, implementation, math, sortings	2500	x854
1890B	Qingshan Loves Strings constructive algorithms, implementation	800	x17612
1889D	Game of Stacks brute force, dfs and similar, graphs, implementation, trees	3000	x624
1889A	Qingshan Loves Strings 2 constructive algorithms, greedy, implementation	1300	x13358
1886C	Decreasing String implementation, strings	1600	x11724
1884E	Hard Design greedy, implementation, math	2800	x322
1881C	Perfect Square brute force, implementation	1200	x17244
1879E	Interactive Game with Coloring brute force, constructive algorithms, dfs and similar, graphs, implementation, interactive, trees	2400	x1277
1878G	wxhtzdy ORO Tree binary search, bitmasks, brute force, data structures, dfs and similar, implementation, trees	2300	x1200
1874A	Jellyfish and Game brute force, games, greedy, implementation	1200	x17254
1873D	1D Eraser greedy, implementation, two pointers	800	x35741
1873C	Target Practice implementation, math	800	x41944
1873A	Short Sort brute force, implementation	800	x55455
1872F	Selling a Menagerie dfs and similar, dsu, graphs, implementation, math	1800	x6442
1872B	The Corridor or There and Back Again greedy, implementation	900	x28114
1870D	Prefix Purchase greedy, implementation, sortings	1800	x7079
1870C	Colorful Table binary search, data structures, dp, implementation, math, two pointers	1300	x11624
1868F	LIS? data structures, greedy, implementation	3500	x78
1868D	Flower-like Pseudotree constructive algorithms, graphs, greedy, implementation, trees	3000	x290
1868C	Travel Plan combinatorics, dp, implementation, math, trees	2400	x1177
1868B2	Candy Party (Hard Version) bitmasks, constructive algorithms, dp, greedy, implementation, math	2100	x2431
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x7093
1868A	Fill in the Matrix constructive algorithms, implementation	1300	x12133
1867D	Cyclic Operations brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	1800	x5868
1866K	Keen Tree Calculation binary search, data structures, dp, geometry, graphs, implementation, trees	2500	x451
1864G	Magic Square combinatorics, constructive algorithms, implementation	3100	x280
1864F	Exotic Queries data structures, implementation, sortings	2300	x1449
1864A	Increasing and Decreasing constructive algorithms, greedy, implementation, math	800	x20398
1863C	MEX Repetition implementation, math	1100	x14138
1863A	Channel greedy, implementation	800	x17976
1862C	Flower City Fence binary search, data structures, implementation, sortings	1100	x21005
1862A	Gift Carpet dp, greedy, implementation, strings	800	x32731
1861E	Non-Intersecting Subpermutations combinatorics, dp, implementation, math	2300	x1758
1861C	Queries for the Array data structures, dfs and similar, implementation, strings, trees	1600	x10278
1860F	Evaluate RBS data structures, geometry, implementation, math, sortings	2900	x280
1857B	Maximum Rounding greedy, implementation, math	1100	x23189
1856E2	PermuTree (hard version) bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees	2700	x1440
1856B	Good Arrays implementation, math	900	x24554
1856A	Tales of a Sort implementation	800	x26694