Problemset - Codeforces

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Codeforces Round 973 (Div. 2)
13:28:02
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Problems

#	Name
1931D	Divisible Pairs combinatorics, math, number theory	1300	x18396
1931C	Make Equal Again brute force, greedy, math	1000	x28650
1930E	2..3...4.... Wonderful! Wonderful! combinatorics, dp, math	2400	x1109
1930B	Permutation Printing brute force, constructive algorithms, math	1000	x15005
1929F	Sasha and the Wedding Binary Search Tree brute force, combinatorics, data structures, dfs and similar, math, trees	2300	x1762
1929E	Sasha and the Happy Tree Cutting bitmasks, brute force, dfs and similar, dp, graphs, greedy, math, trees	2300	x1655
1929D	Sasha and a Walk in the City combinatorics, dp, math, trees	1900	x4670
1929C	Sasha and the Casino binary search, brute force, constructive algorithms, games, greedy, math	1400	x14576
1929B	Sasha and the Drawing constructive algorithms, greedy, math	800	x24990
1929A	Sasha and the Beautiful Array constructive algorithms, greedy, math, sortings	800	x31085
1928F	Digital Patterns combinatorics, data structures, implementation, math	2900	x237
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1680
1928D	Lonely Mountain Dungeons brute force, data structures, greedy, math, ternary search	1900	x4180
1928C	Physical Education Lesson brute force, math, number theory	1600	x8372
1928A	Rectangle Cutting geometry, math	800	x22349
1927G	Paint Charges data structures, dp, greedy, math	2300	x1637
1927E	Klever Permutation constructive algorithms, math, two pointers	1400	x13774
1927C	Choose the Different Ones! brute force, greedy, math	1000	x27593
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x11648
1925D	Good Trip combinatorics, dp, math, probabilities	1900	x3565
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x19744
1924D	Balanced Subsequences combinatorics, dp, math	2700	x964
1924C	Fractal Origami geometry, math, matrices	2400	x1133
1924B	Space Harbour data structures, implementation, math, sortings	2100	x2495
1922E	Increasing Subsequences bitmasks, constructive algorithms, divide and conquer, greedy, math	1800	x7583
1922D	Berserk Monsters brute force, data structures, dsu, implementation, math	1900	x5604
1922C	Closest Cities greedy, implementation, math	1300	x18232
1922B	Forming Triangles combinatorics, constructive algorithms, math, sortings	1200	x20363
1921F	Sum of Progression brute force, data structures, dp, implementation, math	1900	x3790
1921E	Eat the Chip brute force, games, greedy, math	1600	x9664
1921C	Sending Messages greedy, math	900	x29024
1921A	Square greedy, math	800	x42501
1920E	Counting Binary Strings combinatorics, dp, math	2100	x2651
1920D	Array Repetition binary search, brute force, dsu, implementation, math	1900	x5501
1920C	Partitioning the Array brute force, math, number theory	1600	x13285
1920B	Summation Game games, greedy, math, sortings	1100	x20566
1920A	Satisfying Constraints brute force, greedy, math	800	x27519
1919E	Counting Prefixes combinatorics, constructive algorithms, dp, implementation, math	2600	x840
1919A	Wallet Exchange games, math	800	x33110
1918G	Permutation of Given constructive algorithms, math	2700	x457
1918C	XOR-distance bitmasks, greedy, implementation, math	1400	x13756
1918A	Brick Wall constructive algorithms, greedy, implementation, math	800	x29967
1917E	Construct Matrix constructive algorithms, math	2500	x1357
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1766
1917C	Watering an Array brute force, greedy, implementation, math	1600	x10280
1917A	Least Product constructive algorithms, math	800	x25237
1916H2	Matrix Rank (Hard Version) combinatorics, dp, math, matrices, string suffix structures	2700	x527
1916H1	Matrix Rank (Easy Version) brute force, combinatorics, dp, math, matrices	2700	x607
1916D	Mathematical Problem brute force, constructive algorithms, geometry, math	1700	x8430
1916C	Training Before the Olympiad constructive algorithms, games, greedy, implementation, math	1200	x17650
1916B	Two Divisors constructive algorithms, math, number theory	1000	x25464
1916A	2023 constructive algorithms, implementation, math, number theory	800	x25595
1915E	Romantic Glasses data structures, greedy, math	1300	x21220
1914G1	Light Bulbs (Easy Version) brute force, combinatorics, dfs and similar, dp, dsu, graphs, math, trees	2100	x1818
1914C	Quests greedy, math	1100	x23611
1914B	Preparing for the Contest constructive algorithms, math	800	x30096
1912I	Innovative Washing Machine geometry, math, two pointers	3300	x57
1912F	Fugitive Frenzy math, probabilities	3100	x112
1912E	Evaluate It and Back Again constructive algorithms, implementation, math	2200	x892
1912D	Divisibility Test math	1900	x1436
1912B	Blueprint for Seating combinatorics, divide and conquer, math	2100	x1006
1909I	Short Permutation Problem combinatorics, dp, fft, math	1900	x118
1909F2	Small Permutation Problem (Hard Version) combinatorics, dp, math	2500	x900
1909F1	Small Permutation Problem (Easy Version) brute force, combinatorics, dp, math	2200	x1760
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1350
1909D	Split Plus K greedy, math, number theory	1900	x4347
1909C	Heavy Intervals constructive algorithms, data structures, dsu, greedy, math, sortings	1400	x11010
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x16617
1909A	Distinct Buttons implementation, math	800	x16427
1907C	Removal of Unattractive Pairs constructive algorithms, greedy, math, strings	1200	x19978
1906M	Triangle Construction greedy, math	1700	x2609
1906K	Deck-Building Game divide and conquer, math	2500	x296
1905E	One-X combinatorics, dfs and similar, dp, math, trees	2400	x940
1905D	Cyclic MEX data structures, implementation, math, two pointers	2000	x3785
1905A	Constructive Problems constructive algorithms, math	800	x22817
1903E	Geo Game greedy, interactive, math	2000	x1992
1902F	Trees and XOR Queries Again data structures, dfs and similar, divide and conquer, graphs, implementation, math, trees	2400	x999
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x13591
1901D	Yet Another Monster Fight binary search, dp, greedy, implementation, math	1700	x6869
1901C	Add, Divide and Floor constructive algorithms, greedy, math	1400	x11837
1901B	Chip and Ribbon greedy, math	1100	x14890
1901A	Line Trip greedy, math	800	x31295
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x4133
1900B	Laura and Operations dp, math	900	x17295
1899D	Yarik and Musical Notes hashing, math, number theory	1300	x13408
1899A	Game with Integers games, math, number theory	800	x45061
1898D	Absolute Beauty greedy, math	1900	x5187
1898B	Milena and Admirer greedy, math	1500	x11748
1896H2	Cyclic Hamming (Hard Version) brute force, dp, fft, math, number theory	3500	x101
1896H1	Cyclic Hamming (Easy Version) brute force, divide and conquer, dp, fft, math, number theory	3400	x87
1896F	Bracket Xoring constructive algorithms, greedy, implementation, math	2600	x711
1896D	Ones and Twos binary search, data structures, divide and conquer, math, two pointers	1700	x5666
1895F	Fancy Arrays combinatorics, dp, math, matrices	2600	x751
1895D	XOR Construction bitmasks, constructive algorithms, data structures, math, string suffix structures, trees	1900	x5982
1895C	Torn Lucky Ticket brute force, dp, hashing, implementation, math	1400	x11007
1895B	Points and Minimum Distance greedy, math, sortings	800	x20409
1895A	Treasure Chest math	800	x24323
1891E	Brukhovich and Exams brute force, greedy, implementation, math, sortings	2500	x814
1891D	Suspicious logarithms binary search, brute force, math	1900	x3932
1891B	Deja Vu brute force, math, sortings	1100	x17725