Problemset - Codeforces

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Codeforces Round 945 (Div. 2)
3 days
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constructive algorithms

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Problems

#	Name
1907D	Jumping Through Segments binary search, constructive algorithms	1400	x12003
1907C	Removal of Unattractive Pairs constructive algorithms, greedy, math, strings	1200	x18427
1906L	Palindromic Parentheses constructive algorithms	2500	x433
1906E	Merge Not Sort constructive algorithms, dp	1900	x1306
1906B	Button Pressing bitmasks, constructive algorithms, hashing	2600	x455
1905A	Constructive Problems constructive algorithms, math	800	x21815
1904D2	Set To Max (Hard Version) constructive algorithms, data structures, divide and conquer, greedy, implementation, sortings	1800	x3825
1904D1	Set To Max (Easy Version) brute force, constructive algorithms, greedy	1600	x5703
1903C	Theofanis' Nightmare constructive algorithms, greedy	1400	x10409
1903B	StORage room bitmasks, brute force, constructive algorithms, greedy	1200	x11406
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x12280
1902A	Binary Imbalance constructive algorithms	800	x19820
1901C	Add, Divide and Floor constructive algorithms, greedy, math	1400	x10709
1900A	Cover in Water constructive algorithms, greedy, implementation, strings	800	x22045
1899F	Alex's whims constructive algorithms, graphs, greedy, shortest paths, trees	1600	x6678
1898C	Colorful Grid constructive algorithms	1700	x4927
1896G	Pepe Racing constructive algorithms, implementation, interactive, sortings	3200	x308
1896F	Bracket Xoring constructive algorithms, greedy, implementation, math	2600	x652
1896C	Matching Arrays binary search, constructive algorithms, greedy, sortings	1400	x8623
1895D	XOR Construction bitmasks, constructive algorithms, data structures, math, string suffix structures, trees	1900	x5585
1894B	Two Out of Three constructive algorithms	1000	x14729
1893D	Colorful Constructive constructive algorithms, data structures, greedy	2600	x820
1893B	Neutral Tonality constructive algorithms, greedy, sortings, two pointers	1700	x8091
1891C	Smilo and Monsters binary search, constructive algorithms, greedy, sortings, two pointers	1500	x11337
1891A	Sorting with Twos constructive algorithms, sortings	800	x18374
1890B	Qingshan Loves Strings constructive algorithms, implementation	800	x16671
1890A	Doremy's Paint 3 constructive algorithms	800	x21595
1889B	Doremy's Connecting Plan constructive algorithms, greedy, math, sortings	1700	x6755
1889A	Qingshan Loves Strings 2 constructive algorithms, greedy, implementation	1300	x12044
1887F	Minimum Segments constructive algorithms	3400	x112
1887E	Good Colorings binary search, constructive algorithms, graphs, interactive	3100	x332
1887C	Minimum Array binary search, brute force, constructive algorithms, data structures, greedy, hashing, two pointers	2400	x1580
1886E	I Wanna be the Team Leader bitmasks, constructive algorithms, dp, greedy, math, sortings, two pointers	2400	x1335
1886A	Sum of Three brute force, constructive algorithms, math	800	x24548
1882E2	Two Permutations (Hard Version) constructive algorithms	3100	x283
1882E1	Two Permutations (Easy Version) brute force, constructive algorithms, greedy, number theory	2400	x961
1882B	Sets and Union bitmasks, brute force, constructive algorithms, greedy	1300	x14287
1879E	Interactive Game with Coloring brute force, constructive algorithms, dfs and similar, graphs, implementation, interactive, trees	2400	x1182
1879B	Chips on the Board constructive algorithms, greedy	900	x21189
1878B	Aleksa and Stack constructive algorithms, math	800	x29873
1876E	Ball-Stackable constructive algorithms, data structures, dp, trees	3300	x246
1876C	Autosynthesis constructive algorithms, dfs and similar, graphs, greedy, sortings	2100	x2142
1873G	ABBC or BACB constructive algorithms, greedy	1500	x11745
1870A	MEXanized Array constructive algorithms, greedy, math	800	x18501
1869A	Make It Zero constructive algorithms	900	x18647
1868E	Min-Sum-Max constructive algorithms, dp, greedy	3500	x73
1868D	Flower-like Pseudotree constructive algorithms, graphs, greedy, implementation, trees	3000	x248
1868B2	Candy Party (Hard Version) bitmasks, constructive algorithms, dp, greedy, implementation, math	2100	x2277
1868B1	Candy Party (Easy Version) bitmasks, constructive algorithms, graphs, greedy, implementation, math	1700	x6460
1868A	Fill in the Matrix constructive algorithms, implementation	1300	x11178
1867F	Most Different Tree brute force, constructive algorithms, dfs and similar, greedy, hashing	2700	x400
1867E2	Salyg1n and Array (hard version) constructive algorithms, interactive	2200	x2988
1867E1	Salyg1n and Array (simple version) constructive algorithms, interactive, math	2000	x3523
1867D	Cyclic Operations brute force, constructive algorithms, dfs and similar, graphs, greedy, implementation	1800	x5337
1867C	Salyg1n and the MEX Game constructive algorithms, data structures, games, greedy, interactive	1300	x10568
1867B	XOR Palindromes bitmasks, constructive algorithms, strings	1100	x15855
1867A	green_gold_dog, array and permutation constructive algorithms, sortings	800	x19218
1864G	Magic Square combinatorics, constructive algorithms, implementation	3100	x252
1864D	Matrix Cascade brute force, constructive algorithms, data structures, dp, greedy, math	1700	x6344
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x12612
1864B	Swap and Reverse constructive algorithms, greedy, sortings, strings	1100	x14765
1864A	Increasing and Decreasing constructive algorithms, greedy, implementation, math	800	x19779
1863I	Redundant Routes constructive algorithms, dp, trees	3500	x70
1863D	Two-Colored Dominoes constructive algorithms, greedy	1400	x8952
1862E	Kolya and Movie Theatre constructive algorithms, data structures, greedy	1600	x9616
1862D	Ice Cream Balls binary search, combinatorics, constructive algorithms, math	1300	x16060
1862B	Sequence Game constructive algorithms	800	x28762
1861B	Two Binary Strings constructive algorithms, dp, greedy	1000	x20119
1861A	Prime Deletion constructive algorithms, math	800	x23130
1860A	Not a Substring constructive algorithms, strings	900	x20822
1859B	Olya and Game with Arrays constructive algorithms, greedy, math, sortings	1000	x24375
1859A	United We Stand constructive algorithms, math, number theory	800	x29428
1858C	Yet Another Permutation Problem constructive algorithms, greedy, math, number theory	1000	x21973
1854E	Game Bundles brute force, constructive algorithms, dp, greedy, math	3000	x383
1854A2	Dual (Hard Version) constructive algorithms, math	1900	x6699
1854A1	Dual (Easy Version) constructive algorithms, math	1400	x13381
1852E	Rivalries constructive algorithms, data structures, greedy	3400	x157
1852D	Miriany and Matchstick constructive algorithms, dp, greedy	2800	x430
1852B	Imbalanced Arrays constructive algorithms, graphs, greedy, math, sortings, two pointers	1800	x4147
1851A	Escalator Conversations brute force, constructive algorithms, math	800	x28650
1849D	Array Painting constructive algorithms, greedy, two pointers	1700	x7782
1846F	Rudolph and Mimic constructive algorithms, implementation, interactive	1800	x2879
1846D	Rudolph and Christmas Tree constructive algorithms, geometry, math	1200	x18366
1846C	Rudolf and the Another Competition constructive algorithms, data structures, dp, greedy, sortings	1200	x17970
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x24649
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x644
1844F2	Min Cost Permutation (Hard Version) binary search, constructive algorithms, data structures, greedy, math, sortings	2800	x369
1844F1	Min Cost Permutation (Easy Version) brute force, constructive algorithms, greedy, math	2600	x737
1844E	Great Grids 2-sat, constructive algorithms, dfs and similar, dsu, graphs	2400	x1688
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x11635
1844B	Permutations & Primes constructive algorithms, math	1000	x17453
1844A	Subtraction Game constructive algorithms, games	800	x23878
1842D	Tenzing and His Animal Friends constructive algorithms, graphs, greedy	1900	x3922
1841A	Game with Board constructive algorithms, games	800	x24239
1840G2	In Search of Truth (Hard Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2500	x902
1840G1	In Search of Truth (Easy Version) constructive algorithms, interactive, math, meet-in-the-middle, probabilities	2200	x2234
1839E	Decreasing Game constructive algorithms, dfs and similar, dp, greedy, interactive	2400	x1161
1839C	Insert Zero and Invert Prefix constructive algorithms	1300	x11381
1838F	Stuck Conveyor binary search, constructive algorithms, interactive	3000	x302
1838C	No Prime Differences constructive algorithms, math, number theory	1400	x13459