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Problems

#	Name
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x12098
1926C	Vlad and a Sum of Sum of Digits dp, implementation	1200	x27042
1926B	Vlad and Shapes geometry, implementation	800	x32795
1926A	Vlad and the Best of Five implementation	800	x49126
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2611
1923F	Shrink-Reverse binary search, brute force, greedy, hashing, implementation, string suffix structures, strings	2800	x378
1923B	Monsters Attack! dp, greedy, implementation	1100	x17840
1923A	Moving Chips greedy, implementation	800	x24824
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5762
1922C	Closest Cities greedy, implementation, math	1300	x18715
1922A	Tricky Template constructive algorithms, implementation, strings	800	x27102
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	x3939
1921B	Arranging Cats greedy, implementation	800	x33983
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5665
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	x1754
1918D	Blocking Elements binary search, data structures, dp, implementation, two pointers	1900	x4858
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x14214
1918B	Minimize Inversions constructive algorithms, data structures, greedy, implementation, sortings	900	x24056
1918A	Brick Wall constructive algorithms, greedy, implementation, math	800	x30408
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1821
1917C	Watering an Array brute force, greedy, implementation, math	1600	x10614
1916C	Training Before the Olympiad constructive algorithms, games, greedy, implementation, math	1200	x18011
1916A	2023 constructive algorithms, implementation, math, number theory	800	x26174
1915G	Bicycles graphs, greedy, implementation, shortest paths, sortings	1800	x6547
1915D	Unnatural Language Processing greedy, implementation, strings	900	x30604
1915C	Can I Square? binary search, implementation	800	x43553
1915B	Not Quite Latin Square bitmasks, brute force, implementation	800	x42874
1915A	Odd One Out bitmasks, implementation	800	x58579
1914D	Three Activities brute force, dp, greedy, implementation, sortings	1200	x22382
1914A	Problemsolving Log implementation, strings	800	x32061
1913A	Rating Increase implementation	800	x25379
1912E	Evaluate It and Back Again constructive algorithms, implementation, math	2200	x952
1912A	Accumulator Apex data structures, implementation, sortings	1900	x2159
1910C	Poisonous Swamp special problem, special problem, implementation, implementation	1600	x639
1910A	Username *special problem, implementation	1100	x1794
1909A	Distinct Buttons implementation, math	800	x18020
1907G	Lights brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	2200	x1978
1907B	YetnotherrokenKeoard data structures, implementation, strings	1000	x26027
1907A	Rook implementation	800	x37127
1905D	Cyclic MEX data structures, implementation, math, two pointers	2000	x3927
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	x1034
1904D2	Set To Max (Hard Version) constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings	1800	x4515
1904A	Forked! brute force, implementation	900	x20680
1902F	Trees and XOR Queries Again data structures, dfs and similar, divide and conquer, graphs, implementation, math, trees	2400	x1047
1902D	Robot Queries binary search, data structures, dp, implementation	1900	x4209
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x7129
1900F	Local Deletions binary search, data structures, implementation	2800	x293
1900E	Transitive Graph dfs and similar, dp, dsu, graphs, implementation	2100	x2115
1900A	Cover in Water constructive algorithms, greedy, implementation, strings	800	x29264
1899E	Queue Sort greedy, implementation, sortings	1300	x15758
1899B	250 Thousand Tons of TNT brute force, implementation, number theory	1100	x21135
1898A	Milica and String brute force, implementation, strings	800	x16146
1896G	Pepe Racing constructive algorithms, implementation, interactive, sortings	3200	x346
1896F	Bracket Xoring constructive algorithms, greedy, implementation, math	2600	x735
1895C	Torn Lucky Ticket brute force, dp, hashing, implementation, math	1400	x11379
1894A	Secret Sport implementation, strings	800	x19063
1893C	Freedom of Choice brute force, greedy, implementation	2000	x2743
1893A	Anonymous Informant brute force, dfs and similar, graphs, implementation	1400	x12545
1891E	Brukhovich and Exams brute force, greedy, implementation, math, sortings	2500	x854
1890B	Qingshan Loves Strings constructive algorithms, implementation	800	x17615
1889D	Game of Stacks brute force, dfs and similar, graphs, implementation, trees	3000	x627
1889A	Qingshan Loves Strings 2 constructive algorithms, greedy, implementation	1300	x13367
1886C	Decreasing String implementation, strings	1600	x11732
1884E	Hard Design greedy, implementation, math	2800	x322
1881C	Perfect Square brute force, implementation	1200	x17249
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	x1202
1874A	Jellyfish and Game brute force, games, greedy, implementation	1200	x17260
1873D	1D Eraser greedy, implementation, two pointers	800	x35766
1873C	Target Practice implementation, math	800	x41990
1873A	Short Sort brute force, implementation	800	x55517
1872F	Selling a Menagerie dfs and similar, dsu, graphs, implementation, math	1800	x6450
1872B	The Corridor or There and Back Again greedy, implementation	900	x28121
1870D	Prefix Purchase greedy, implementation, sortings	1800	x7091
1870C	Colorful Table binary search, data structures, dp, implementation, math, two pointers	1300	x11633
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	x2437
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x7096
1868A	Fill in the Matrix constructive algorithms, implementation	1300	x12135
1867D	Cyclic Operations brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	1800	x5876
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	x1450
1864A	Increasing and Decreasing constructive algorithms, greedy, implementation, math	800	x20405
1863C	MEX Repetition implementation, math	1100	x14148
1863A	Channel greedy, implementation	800	x17978
1862C	Flower City Fence binary search, data structures, implementation, sortings	1100	x21012
1862A	Gift Carpet dp, greedy, implementation, strings	800	x32742
1861E	Non-Intersecting Subpermutations combinatorics, dp, implementation, math	2300	x1758
1861C	Queries for the Array data structures, dfs and similar, implementation, strings, trees	1600	x10284
1860F	Evaluate RBS data structures, geometry, implementation, math, sortings	2900	x280
1857B	Maximum Rounding greedy, implementation, math	1100	x23194
1856E2	PermuTree (hard version) bitmasks, dfs and similar, dp, fft, greedy, implementation, math, trees	2700	x1440
1856B	Good Arrays implementation, math	900	x24566