Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
34:17:05
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Before contest
Codeforces Round 941 (Div. 2)
34:17:05
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number theory

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Problems

#	Name
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory		x757
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x3039
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x1549
1954C	Long Multiplication greedy, math, number theory	1200	x14328
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x11270
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x19390
1946E	Girl Permutation combinatorics, dp, math, number theory	2200	x2010
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x460
1945B	Fireworks math, number theory	900	x19067
1934E	Weird LCM Operations brute force, constructive algorithms, number theory	3000	x169
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x17470
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x20192
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x29542
1932G	Moving Platforms graphs, math, number theory, shortest paths	2300	x859
1932E	Final Countdown implementation, math, number theory	1600	x6599
1932B	Chaya Calendar number theory	1100	x18116
1931G	One-Dimensional Puzzle combinatorics, math, number theory	2000	x2404
1931D	Divisible Pairs combinatorics, math, number theory	1300	x15608
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1509
1928C	Physical Education Lesson brute force, math, number theory	1600	x7359
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x9787
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x18063
1920C	Partitioning the Array brute force, math, number theory	1600	x11691
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1642
1916G	Optimizations From Chelsu divide and conquer, dp, number theory, trees	3500	x132
1916B	Two Divisors constructive algorithms, math, number theory	1000	x23458
1916A	2023 constructive algorithms, implementation, math, number theory	800	x24431
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1234
1909D	Split Plus K greedy, math, number theory	1900	x3939
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x13673
1907E	Good Triples brute force, combinatorics, number theory	1600	x8686
1906G	Grid Game 2 games, number theory	2900	x144
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x12123
1900D	Small GCD bitmasks, brute force, dp, math, number theory	2000	x3662
1899D	Yarik and Musical Notes hashing, math, number theory	1300	x12094
1899B	250 Thousand Tons of TNT brute force, implementation, number theory	1100	x17916
1899A	Game with Integers games, math, number theory	800	x37231
1896H2	Cyclic Hamming (Hard Version) brute force, dp, fft, math, number theory	3500	x84
1896H1	Cyclic Hamming (Easy Version) brute force, divide and conquer, dp, fft, math, number theory	3400	x77
1884D	Counting Rhyme dp, math, number theory	2100	x2779
1882E1	Two Permutations (Easy Version) brute force, constructive algorithms, greedy, number theory	2400	x949
1881D	Divide and Equalize math, number theory	1300	x14213
1879F	Last Man Standing brute force, data structures, number theory	2800	x469
1878F	Vasilije Loves Number Theory brute force, math, number theory	1900	x3684
1877C	Joyboard math, number theory	1200	x9991
1876B	Effects of Anti Pimples combinatorics, number theory, sortings	1500	x7441
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x10722
1872C	Non-coprime Split math, number theory	1100	x21838
1866B	Battling with Numbers combinatorics, math, number theory	1400	x7163
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x12534
1859A	United We Stand constructive algorithms, math, number theory	800	x29058
1858C	Yet Another Permutation Problem constructive algorithms, greedy, math, number theory	1000	x21851
1858B	The Walkway brute force, dp, greedy, math, number theory	1500	x10568
1855B	Longest Divisors Interval brute force, combinatorics, greedy, math, number theory	900	x23567
1852A	Ntarsis' Set binary search, math, number theory	1800	x7527
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x16973
1848E	Vika and Stone Skipping brute force, implementation, math, number theory	2600	x737
1848C	Vika and Price Tags math, number theory	1800	x5917
1845F	Swimmers in the Pool dp, fft, math, number theory	2800	x349
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x24401
1844G	Tree Weights bitmasks, constructive algorithms, data structures, dfs and similar, implementation, math, matrices, number theory, trees	3000	x637
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x11576
1838C	No Prime Differences constructive algorithms, math, number theory	1400	x13365
1835D	Doctor's Brown Hypothesis dfs and similar, graphs, math, number theory	2900	x442
1834E	MEX of LCM binary search, data structures, implementation, math, number theory	2300	x2041
1830C	Hyperregular Bracket Strings combinatorics, greedy, hashing, math, number theory, sortings	2400	x1512
1828B	Permutation Swap math, number theory	900	x20498
1826C	Dreaming of Freedom greedy, math, number theory	1300	x12737
1826B	Lunatic Never Content math, number theory	1100	x15628
1823C	Strongly Composite greedy, math, number theory	1300	x11627
1822G2	Magic Triples (Hard Version) brute force, data structures, math, number theory	2200	x2287
1822G1	Magic Triples (Easy Version) brute force, data structures, math, number theory	1700	x6445
1816A	Ian Visits Mary constructive algorithms, geometry, number theory	800	x16909
1815E	Bosco and Particle dp, math, number theory, strings	3100	x323
1812F	Factorization *special problem, number theory		x949
1812D	Trivial Conjecture *special problem, constructive algorithms, math, number theory		x4329
1811E	Living Sequence binary search, dp, math, number theory	1500	x11493
1810B	Candies constructive algorithms, math, number theory	800	x17114
1806F1	GCD Master (easy version) greedy, math, number theory, sortings	2900	x328
1804C	Pull Your Luck brute force, greedy, math, number theory	1500	x11462
1801F	Another n-dimensional chocolate bar dp, math, meet-in-the-middle, number theory	2700	x544
1798F	Gifts from Grandfather Ahmed dp, math, number theory	2500	x467
1798C	Candy Store greedy, math, number theory	1700	x7749
1797E	Li Hua and Array brute force, data structures, dsu, math, number theory, two pointers	2300	x1179
1796F	Strange Triples brute force, math, number theory	2900	x167
1794D	Counting Factorizations combinatorics, divide and conquer, dp, math, number theory	1900	x3333
1792E	Divisors and Table brute force, dfs and similar, dp, number theory	2400	x1300
1789E	Serval and Music Game brute force, dp, implementation, math, number theory	2500	x755
1789A	Serval and Mocha's Array brute force, math, number theory	800	x16846
1787B	Number Factorization greedy, math, number theory	1100	x12652
1783E	Game of the Year brute force, data structures, math, number theory	2300	x2016
1781D	Many Perfect Squares brute force, math, number theory	1800	x5218
1780G	Delicious Dessert binary search, dsu, hashing, math, number theory, string suffix structures	2400	x665
1780F	Three Chairs bitmasks, brute force, combinatorics, data structures, dp, number theory, sortings	2300	x1367
1780E	Josuke and Complete Graph binary search, brute force, data structures, math, number theory	2400	x1297
1780B	GCD Partition brute force, greedy, math, number theory	1100	x16475
1778F	Maximizing Root dfs and similar, dp, graphs, math, number theory, trees	2600	x595
1777C	Quiz Master binary search, math, number theory, sortings, two pointers	1700	x7666
1775D	Friendly Spiders dfs and similar, graphs, math, number theory, shortest paths	1800	x5736
1771C	Hossam and Trainees greedy, math, number theory	1600	x8958

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