Problemset - Codeforces

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Codeforces Round (Div. 3)
4 days

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Difficulty: —

constructive algorithms

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Problems

#	Name
1918E	ace5 and Task Order constructive algorithms, divide and conquer, implementation, interactive, probabilities, sortings	2200	x1629
1918B	Minimize Inversions constructive algorithms, data structures, greedy, implementation, sortings	900	x22810
1918A	Brick Wall constructive algorithms, greedy, implementation, math	800	x29364
1917F	Construct Tree bitmasks, constructive algorithms, dp, trees	2500	x921
1917E	Construct Matrix constructive algorithms, math	2500	x1304
1917A	Least Product constructive algorithms, math	800	x24709
1916F	Group Division constructive algorithms, dfs and similar, graphs, greedy	2900	x435
1916D	Mathematical Problem brute force, constructive algorithms, geometry, math	1700	x8124
1916C	Training Before the Olympiad constructive algorithms, games, greedy, implementation, math	1200	x17163
1916B	Two Divisors constructive algorithms, math, number theory	1000	x24507
1916A	2023 constructive algorithms, implementation, math, number theory	800	x25046
1914B	Preparing for the Contest constructive algorithms, math	800	x29261
1912E	Evaluate It and Back Again constructive algorithms, implementation, math	2200	x808
1912C	Cactus Transformation constructive algorithms	3300	x54
1909H	Parallel Swaps Sort constructive algorithms, data structures	3500	x68
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1294
1909C	Heavy Intervals constructive algorithms, data structures, dsu, greedy, math, sortings	1400	x10444
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x15154
1907G	Lights brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	2200	x1812
1907D	Jumping Through Segments binary search, constructive algorithms	1400	x12777
1907C	Removal of Unattractive Pairs constructive algorithms, greedy, math, strings	1200	x19109
1906L	Palindromic Parentheses constructive algorithms	2500	x445
1906E	Merge Not Sort constructive algorithms, dp	1900	x1378
1906B	Button Pressing bitmasks, constructive algorithms, hashing	2600	x467
1905A	Constructive Problems constructive algorithms, math	800	x22304
1904D2	Set To Max (Hard Version) constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings	1800	x4063
1904D1	Set To Max (Easy Version) brute force, constructive algorithms, greedy	1600	x6129
1903C	Theofanis' Nightmare constructive algorithms, greedy	1400	x11070
1903B	StORage room bitmasks, brute force, constructive algorithms, greedy	1200	x11955
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x12874
1902A	Binary Imbalance constructive algorithms	800	x20253
1901C	Add, Divide and Floor constructive algorithms, greedy, math	1400	x11178
1900A	Cover in Water constructive algorithms, greedy, implementation, strings	800	x23895
1899F	Alex's whims constructive algorithms, graphs, greedy, shortest paths, trees	1600	x7017
1898C	Colorful Grid constructive algorithms	1700	x5144
1896G	Pepe Racing constructive algorithms, implementation, interactive, sortings	3200	x318
1896F	Bracket Xoring constructive algorithms, greedy, implementation, math	2600	x671
1896C	Matching Arrays binary search, constructive algorithms, greedy, sortings	1400	x9054
1895D	XOR Construction bitmasks, constructive algorithms, data structures, math, string suffix structures, trees	1900	x5737
1894B	Two Out of Three constructive algorithms	1000	x15201
1893D	Colorful Constructive constructive algorithms, data structures, greedy	2600	x843
1893B	Neutral Tonality constructive algorithms, greedy, sortings, two pointers	1700	x8349
1891C	Smilo and Monsters binary search, constructive algorithms, greedy, sortings, two pointers	1500	x12047
1891A	Sorting with Twos constructive algorithms, sortings	800	x18778
1890B	Qingshan Loves Strings constructive algorithms, implementation	800	x17038
1890A	Doremy's Paint 3 constructive algorithms	800	x23590
1889B	Doremy's Connecting Plan constructive algorithms, greedy, math, sortings	1700	x6993
1889A	Qingshan Loves Strings 2 constructive algorithms, greedy, implementation	1300	x12493
1887F	Minimum Segments constructive algorithms	3400	x123
1887E	Good Colorings binary search, constructive algorithms, graphs, interactive	3100	x342
1887C	Minimum Array binary search, brute force, constructive algorithms, data structures, greedy, hashing, two pointers	2400	x1628
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1374
1886A	Sum of Three brute force, constructive algorithms, math	800	x25097
1882E2	Two Permutations (Hard Version) constructive algorithms	3100	x287
1882E1	Two Permutations (Easy Version) brute force, constructive algorithms, greedy, number theory	2400	x978
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x14870
1879E	Interactive Game with Coloring brute force, constructive algorithms, dfs and similar, graphs, implementation, interactive, trees	2400	x1209
1879B	Chips on the Board constructive algorithms, greedy	900	x21745
1878B	Aleksa and Stack constructive algorithms, math	800	x30633
1876E	Ball-Stackable constructive algorithms, data structures, dp, trees	3300	x261
1876C	Autosynthesis constructive algorithms, dfs and similar, graphs, greedy, sortings	2100	x2191
1873G	ABBC or BACB constructive algorithms, greedy	1500	x12388
1870A	MEXanized Array constructive algorithms, greedy, math	800	x18761
1869A	Make It Zero constructive algorithms	900	x19855
1868E	Min-Sum-Max constructive algorithms, dp, greedy	3500	x77
1868D	Flower-like Pseudotree constructive algorithms, graphs, greedy, implementation, trees	3000	x257
1868B2	Candy Party (Hard Version) bitmasks, constructive algorithms, dp, greedy, implementation, math	2100	x2328
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x6686
1868A	Fill in the Matrix constructive algorithms, implementation	1300	x11558
1867F	Most Different Tree brute force, constructive algorithms, dfs and similar, greedy, hashing	2700	x406
1867E2	Salyg1n and Array (hard version) constructive algorithms, interactive	2200	x3068
1867E1	Salyg1n and Array (simple version) constructive algorithms, interactive, math	2000	x3613
1867D	Cyclic Operations brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	1800	x5531
1867C	Salyg1n and the MEX Game constructive algorithms, data structures, games, greedy, interactive	1300	x10866
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x16303
1867A	green_gold_dog, array and permutation constructive algorithms, sortings	800	x19608
1864G	Magic Square combinatorics, constructive algorithms, implementation	3100	x255
1864D	Matrix Cascade brute force, constructive algorithms, data structures, dp, greedy, math	1700	x6506
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x12995
1864B	Swap and Reverse constructive algorithms, greedy, sortings, strings	1100	x15011
1864A	Increasing and Decreasing constructive algorithms, greedy, implementation, math	800	x20005
1863I	Redundant Routes constructive algorithms, dp, trees	3500	x73
1863D	Two-Colored Dominoes constructive algorithms, greedy	1400	x9193
1862E	Kolya and Movie Theatre constructive algorithms, data structures, greedy	1600	x10162
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x16518
1862B	Sequence Game constructive algorithms	800	x30076
1861B	Two Binary Strings constructive algorithms, dp, greedy	1000	x20726
1861A	Prime Deletion constructive algorithms, math	800	x23494
1860A	Not a Substring constructive algorithms, strings	900	x21226
1859B	Olya and Game with Arrays constructive algorithms, greedy, math, sortings	1000	x25412
1859A	United We Stand constructive algorithms, math, number theory	800	x30499
1858C	Yet Another Permutation Problem constructive algorithms, greedy, math, number theory	1000	x22434
1854E	Game Bundles brute force, constructive algorithms, dp, greedy, math	3000	x389
1854A2	Dual (Hard Version) constructive algorithms, math	1900	x6819
1854A1	Dual (Easy Version) constructive algorithms, math	1400	x13670
1852E	Rivalries constructive algorithms, data structures, greedy	3400	x162
1852D	Miriany and Matchstick constructive algorithms, dp, greedy	2800	x434
1852B	Imbalanced Arrays constructive algorithms, graphs, greedy, math, sortings, two pointers	1800	x4273
1851A	Escalator Conversations brute force, constructive algorithms, math	800	x29064
1849D	Array Painting constructive algorithms, greedy, two pointers	1700	x8098