Problemset - Codeforces

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Codeforces Round 973 (Div. 2)
16:07:28
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number theory

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Problems

#	Name
2008H	Sakurako's Test binary search, brute force, greedy, math, number theory	2100	x2360
2008G	Sakurako's Task binary search, greedy, math, number theory	1800	x4224
2008F	Sakurako's Box combinatorics, math, number theory	1400	x10939
2007C	Dora and C++ math, number theory	1500	x10496
2007A	Dora's Set greedy, math, number theory	800	x20650
2006C	Eri and Expanded Sets data structures, divide and conquer, math, number theory, two pointers	2300	x1378
2005D	Alter the GCD binary search, data structures, divide and conquer, implementation, number theory		x552
2004E	Not a Nim Problem brute force, games, math, number theory	2100	x3694
2002F2	Court Blue (Hard Version) brute force, dp, math, number theory	2800	x389
2002F1	Court Blue (Easy Version) brute force, dfs and similar, dp, math, number theory	2600	x763
1998B	Minimize Equal Sum Subarrays constructive algorithms, math, number theory	1000	x22340
1996D	Fun binary search, brute force, combinatorics, math, number theory	1500	x14834
1995C	Squaring brute force, constructive algorithms, greedy, implementation, math, number theory	1800	x7876
1994H	Fortnite combinatorics, constructive algorithms, games, greedy, hashing, interactive, math, number theory, strings	3500	x490
1994D	Funny Game constructive algorithms, dsu, graphs, greedy, math, number theory, trees	1900	x5409
1993F2	Dyn-scripted Robot (Hard Version) chinese remainder theorem, math, number theory	2800	x359
1993F1	Dyn-scripted Robot (Easy Version) brute force, chinese remainder theorem, constructive algorithms, math, number theory	2400	x913
1992F	Valuable Cards brute force, dp, greedy, number theory, two pointers	1900	x5449
1991H	Prime Split Game bitmasks, dp, fft, games, math, number theory	3300	x256
1991D	Prime XOR Coloring bitmasks, constructive algorithms, graphs, greedy, math, number theory	1900	x6104
1986G2	Permutation Problem (Hard Version) brute force, data structures, hashing, math, number theory	2500	x1010
1986G1	Permutation Problem (Simple Version) binary search, brute force, combinatorics, data structures, math, number theory	2200	x1398
1986E	Beautiful Array greedy, math, number theory, sortings	1700	x8365
1985G	D-Function combinatorics, math, number theory	1600	x8902
1985B	Maximum Multiple Sum brute force, math, number theory	800	x44210
1982D	Beauty of the mountains brute force, data structures, implementation, math, number theory	1700	x6819
1982B	Collatz Conjecture brute force, implementation, math, number theory	1200	x16350
1981D	Turtle and Multiplication constructive algorithms, dfs and similar, graphs, number theory	2400	x1554
1980D	GCD-sequence greedy, implementation, math, number theory	1400	x13800
1979C	Earning on Bets binary search, combinatorics, constructive algorithms, number theory	1200	x18163
1978F	Large Graph data structures, dfs and similar, dsu, graphs, number theory, two pointers	2400	x1264
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x6505
1973F	Maximum GCD Sum Queries bitmasks, brute force, dp, implementation, number theory	3100	x202
1968C	Assembly via Remainders constructive algorithms, number theory	1000	x24261
1968A	Maximize? brute force, math, number theory	800	x33192
1967B2	Reverse Card (Hard Version) brute force, math, number theory	2200	x3833
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x12885
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x6477
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x1218
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x4358
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x2169
1954C	Long Multiplication greedy, math, number theory	1200	x18937
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x14074
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x22782
1946E	Girl Permutation combinatorics, dp, math, number theory	2200	x2476
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x628
1945B	Fireworks math, number theory	900	x22161
1934E	Weird LCM Operations brute force, constructive algorithms, number theory	3000	x220
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x19874
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x22329
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x32435
1932G	Moving Platforms graphs, math, number theory, shortest paths	2300	x1045
1932E	Final Countdown implementation, math, number theory	1600	x7968
1932B	Chaya Calendar number theory	1100	x20436
1931G	One-Dimensional Puzzle combinatorics, math, number theory	2000	x2755
1931D	Divisible Pairs combinatorics, math, number theory	1300	x18396
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1680
1928C	Physical Education Lesson brute force, math, number theory	1600	x8372
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x11646
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x19743
1920C	Partitioning the Array brute force, math, number theory	1600	x13285
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1766
1916G	Optimizations From Chelsu divide and conquer, dp, number theory, trees	3500	x147
1916B	Two Divisors constructive algorithms, math, number theory	1000	x25464
1916A	2023 constructive algorithms, implementation, math, number theory	800	x25595
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1350
1909D	Split Plus K greedy, math, number theory	1900	x4347
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x16617
1907E	Good Triples brute force, combinatorics, number theory	1600	x10053
1906G	Grid Game 2 games, number theory	2900	x189
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x13591
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x4133
1899D	Yarik and Musical Notes hashing, math, number theory	1300	x13408
1899B	250 Thousand Tons of TNT brute force, implementation, number theory	1100	x20399
1899A	Game with Integers games, math, number theory	800	x45061
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
1884D	Counting Rhyme dp, math, number theory	2100	x3163
1882E1	Two Permutations (Easy Version) brute force, constructive algorithms, greedy, number theory	2400	x1005
1881D	Divide and Equalize math, number theory	1300	x16884
1879F	Last Man Standing brute force, data structures, number theory	2800	x508
1878F	Vasilije Loves Number Theory brute force, math, number theory	1900	x4074
1877C	Joyboard math, number theory	1200	x10849
1876B	Effects of Anti Pimples combinatorics, number theory, sortings	1500	x8196
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x11653
1872C	Non-coprime Split math, number theory	1100	x23264
1866B	Battling with Numbers combinatorics, math, number theory	1400	x7664
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x13389
1859A	United We Stand constructive algorithms, math, number theory	800	x32168
1858C	Yet Another Permutation Problem constructive algorithms, greedy, math, number theory	1000	x22962
1858B	The Walkway brute force, dp, greedy, math, number theory	1500	x11248
1855B	Longest Divisors Interval brute force, combinatorics, greedy, math, number theory	900	x26390
1852A	Ntarsis' Set binary search, math, number theory	1800	x7998
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x18939
1848E	Vika and Stone Skipping brute force, implementation, math, number theory	2600	x782
1848C	Vika and Price Tags math, number theory	1800	x6262
1845F	Swimmers in the Pool dp, fft, math, number theory	2800	x370
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x27115
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x716
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x12240

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