Problemset - Codeforces

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Refact.ai Match 1 (Codeforces Round 985)
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number theory

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Problems

#	Name
2036G	Library of Magic binary search, bitmasks, constructive algorithms, divide and conquer, interactive, number theory		x562
2036F	XORificator 3000 bitmasks, dp, number theory, two pointers		x2315
2035B	Everyone Loves Tres constructive algorithms, greedy, math, number theory	900	x12564
2033F	Kosuke's Sloth brute force, math, number theory	1800	x4739
2032A	Circuit greedy, implementation, math, number theory		x17971
2021B	Maximize Mex brute force, greedy, math, number theory	1200	x13824
2020F	Count Leaves dp, math, number theory	2900	x186
2020A	Find Minimum Operations bitmasks, brute force, greedy, math, number theory	800	x21465
2013E	Prefix GCD brute force, dp, greedy, math, number theory	2200	x3094
2008H	Sakurako's Test binary search, brute force, greedy, math, number theory	2100	x2827
2008G	Sakurako's Task binary search, greedy, math, number theory	1800	x5033
2008F	Sakurako's Box combinatorics, math, number theory	1400	x12314
2007C	Dora and C++ math, number theory	1500	x12028
2007A	Dora's Set greedy, math, number theory	800	x22439
2006C	Eri and Expanded Sets data structures, divide and conquer, math, number theory, two pointers	2300	x1608
2005D	Alter the GCD binary search, brute force, data structures, divide and conquer, implementation, number theory	2400	x838
2004E	Not a Nim Problem brute force, games, math, number theory	2100	x4004
2002F2	Court Blue (Hard Version) brute force, dp, math, number theory	2800	x417
2002F1	Court Blue (Easy Version) brute force, dfs and similar, dp, math, number theory	2600	x808
1998B	Minimize Equal Sum Subarrays constructive algorithms, math, number theory	1000	x23488
1996D	Fun binary search, brute force, combinatorics, math, number theory	1500	x15799
1995C	Squaring brute force, constructive algorithms, greedy, implementation, math, number theory	1800	x8485
1994H	Fortnite combinatorics, constructive algorithms, games, greedy, hashing, interactive, math, number theory, strings	3500	x700
1994D	Funny Game constructive algorithms, dsu, graphs, greedy, math, number theory, trees	1900	x5686
1993F2	Dyn-scripted Robot (Hard Version) chinese remainder theorem, math, number theory	2800	x407
1993F1	Dyn-scripted Robot (Easy Version) brute force, chinese remainder theorem, constructive algorithms, math, number theory	2400	x982
1992F	Valuable Cards brute force, dp, greedy, number theory, two pointers	1900	x5718
1991H	Prime Split Game bitmasks, dp, fft, games, math, number theory	3300	x501
1991D	Prime XOR Coloring bitmasks, constructive algorithms, graphs, greedy, math, number theory	1900	x6619
1986G2	Permutation Problem (Hard Version) brute force, data structures, hashing, math, number theory	2500	x1070
1986G1	Permutation Problem (Simple Version) binary search, brute force, combinatorics, data structures, math, number theory	2200	x1479
1986E	Beautiful Array greedy, math, number theory, sortings	1700	x8759
1985G	D-Function combinatorics, math, number theory	1600	x9297
1985B	Maximum Multiple Sum brute force, math, number theory	800	x45994
1982D	Beauty of the mountains brute force, data structures, implementation, math, number theory	1700	x7108
1982B	Collatz Conjecture brute force, implementation, math, number theory	1200	x16883
1981D	Turtle and Multiplication constructive algorithms, dfs and similar, graphs, number theory	2400	x1652
1980D	GCD-sequence greedy, implementation, math, number theory	1400	x14228
1979C	Earning on Bets binary search, combinatorics, constructive algorithms, number theory	1200	x18694
1978F	Large Graph data structures, dfs and similar, dsu, graphs, number theory, two pointers	2400	x1317
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x6723
1973F	Maximum GCD Sum Queries bitmasks, brute force, dp, implementation, number theory	3100	x222
1968C	Assembly via Remainders constructive algorithms, number theory	1000	x24957
1968A	Maximize? brute force, math, number theory	800	x34446
1967B2	Reverse Card (Hard Version) brute force, math, number theory	2200	x3924
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x13255
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x6697
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x1264
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x4537
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x2297
1954C	Long Multiplication greedy, math, number theory	1200	x19428
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x14431
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x23197
1946E	Girl Permutation combinatorics, dp, math, number theory	2200	x2561
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x669
1945B	Fireworks math, number theory	900	x22686
1934E	Weird LCM Operations brute force, constructive algorithms, number theory	3000	x239
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x20306
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x22689
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x32956
1932G	Moving Platforms graphs, math, number theory, shortest paths	2300	x1081
1932E	Final Countdown implementation, math, number theory	1600	x8246
1932B	Chaya Calendar number theory	1100	x20835
1931G	One-Dimensional Puzzle combinatorics, math, number theory	2000	x2858
1931D	Divisible Pairs combinatorics, math, number theory	1300	x19072
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1724
1928C	Physical Education Lesson brute force, math, number theory	1600	x8600
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x12018
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x20190
1920C	Partitioning the Array brute force, math, number theory	1600	x13717
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1801
1916G	Optimizations From Chelsu divide and conquer, dp, number theory, trees	3500	x148
1916B	Two Divisors constructive algorithms, math, number theory	1000	x25965
1916A	2023 constructive algorithms, implementation, math, number theory	800	x26091
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1381
1909D	Split Plus K greedy, math, number theory	1900	x4458
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x17294
1907E	Good Triples brute force, combinatorics, number theory	1600	x10392
1906G	Grid Game 2 games, number theory	2900	x207
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x13904
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x4268
1899D	Yarik and Musical Notes hashing, math, number theory	1300	x13624
1899B	250 Thousand Tons of TNT brute force, implementation, number theory	1100	x20961
1899A	Game with Integers games, math, number theory	800	x47367
1896H2	Cyclic Hamming (Hard Version) brute force, dp, fft, math, number theory	3500	x104
1896H1	Cyclic Hamming (Easy Version) brute force, divide and conquer, dp, fft, math, number theory	3400	x89
1884D	Counting Rhyme dp, math, number theory	2100	x3258
1882E1	Two Permutations (Easy Version) brute force, constructive algorithms, greedy, number theory	2400	x1031
1881D	Divide and Equalize math, number theory	1300	x17520
1879F	Last Man Standing brute force, data structures, number theory	2800	x512
1878F	Vasilije Loves Number Theory brute force, math, number theory	1900	x4149
1877C	Joyboard math, number theory	1200	x11114
1876B	Effects of Anti Pimples combinatorics, number theory, sortings	1500	x8404
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x11845
1872C	Non-coprime Split math, number theory	1100	x23574
1866B	Battling with Numbers combinatorics, math, number theory	1400	x7808
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x13590
1859A	United We Stand constructive algorithms, math, number theory	800	x33208
1858C	Yet Another Permutation Problem constructive algorithms, greedy, math, number theory	1000	x23198
1858B	The Walkway brute force, dp, greedy, math, number theory	1500	x11393

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