Problemset - Codeforces

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Codeforces Round 944 (Div. 4)
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number theory

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Problems

#	Name
630J	Divisibility math, number theory	1100	x10683
1166B	All the Vowels Please constructive algorithms, math, number theory	1100	x11256
633A	Ebony and Ivory brute force, math, number theory	1100	x12309
1787B	Number Factorization greedy, math, number theory	1100	x12696
797A	k-Factorization implementation, math, number theory	1100	x13998
1826B	Lunatic Never Content math, number theory	1100	x15718
1762B	Make Array Good constructive algorithms, implementation, number theory, sortings	1100	x16190
1780B	GCD Partition brute force, greedy, math, number theory	1100	x16553
1899B	250 Thousand Tons of TNT brute force, implementation, number theory	1100	x18076
1932B	Chaya Calendar number theory	1100	x18351
1593D1	All are Same math, number theory	1100	x19571
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x20146
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x20451
682A	Alyona and Numbers constructive algorithms, math, number theory	1100	x20497
1742D	Coprime brute force, greedy, number theory	1100	x21648
1511B	GCD Length constructive algorithms, math, number theory	1100	x21962
1872C	Non-coprime Split math, number theory	1100	x21988
483A	Counterexample brute force, implementation, math, number theory	1100	x22211
1108B	Divisors of Two Integers brute force, greedy, math, number theory	1100	x22418
1370B	GCD Compression constructive algorithms, math, number theory	1100	x23098
919B	Perfect Number binary search, brute force, dp, implementation, number theory	1100	x26878
177B1	Rectangular Game number theory	1000	x3990
299A	Ksusha and Array brute force, number theory, sortings	1000	x7746
1765M	Minimum LCM math, number theory	1000	x12651
1245A	Good ol' Numbers Coloring math, number theory	1000	x13890
1732A	Bestie brute force, combinatorics, constructive algorithms, implementation, math, number theory	1000	x14413
1107B	Digital root math, number theory	1000	x14826
17A	Noldbach problem brute force, math, number theory	1000	x15080
1051B	Relatively Prime Pairs greedy, math, number theory	1000	x16491
1968C	Assembly via Remainders constructive algorithms, number theory	1000	x17366
1411B	Fair Numbers brute force, number theory	1000	x17803
1562B	Scenes From a Memory brute force, constructive algorithms, implementation, math, number theory	1000	x19169
1485A	Add and Divide brute force, greedy, math, number theory	1000	x20824
1858C	Yet Another Permutation Problem constructive algorithms, greedy, math, number theory	1000	x21946
1916B	Two Divisors constructive algorithms, math, number theory	1000	x23596
1515B	Phoenix and Puzzle brute force, geometry, math, number theory	1000	x24150
1474B	Different Divisors binary search, constructive algorithms, greedy, math, number theory	1000	x26345
1326A	Bad Ugly Numbers constructive algorithms, number theory	1000	x29450
1473B	String LCM brute force, math, number theory, strings	1000	x29687
766B	Mahmoud and a Triangle constructive algorithms, geometry, greedy, math, number theory, sortings	1000	x31123
1521A	Nastia and Nearly Good Numbers constructive algorithms, math, number theory	1000	x35327
577A	Multiplication Table implementation, number theory	1000	x38071
742A	Arpa’s hard exam and Mehrdad’s naive cheat implementation, math, number theory	1000	x39890
122A	Lucky Division brute force, number theory	1000	x116126
267A	Subtractions math, number theory	900	x7138
84A	Toy Army math, number theory	900	x14571
1764B	Doremy's Perfect Math Class math, number theory	900	x15262
1609A	Divide and Multiply greedy, implementation, math, number theory	900	x16672
1945B	Fireworks math, number theory	900	x19580
1828B	Permutation Swap math, number theory	900	x20641
1720A	Burenka Plays with Fractions math, number theory	900	x21744
1679A	AvtoBus brute force, greedy, math, number theory	900	x21866
1617B	GCD Problem brute force, constructive algorithms, math, number theory	900	x22411
1238A	Prime Subtraction math, number theory	900	x23270
1855B	Longest Divisors Interval brute force, combinatorics, greedy, math, number theory	900	x23761
1471A	Strange Partition greedy, math, number theory	900	x24521
199A	Hexadecimal's theorem brute force, constructive algorithms, implementation, number theory	900	x25082
1324A	Yet Another Tetris Problem implementation, number theory	900	x25303
1543A	Exciting Bets greedy, math, number theory	900	x26398
26A	Almost Prime number theory	900	x28560
1535B	Array Reodering brute force, greedy, math, number theory, sortings	900	x29604
313A	Ilya and Bank Account implementation, number theory	900	x53619
1475A	Odd Divisor math, number theory	900	x55238
1581A	CQXYM Count Permutations combinatorics, math, number theory	800	x13245
1583A	Windblume Ode math, number theory	800	x13530
1816A	Ian Visits Mary constructive algorithms, geometry, number theory	800	x16931
1789A	Serval and Mocha's Array brute force, math, number theory	800	x16983
1810B	Candies constructive algorithms, math, number theory	800	x17137
664A	Complicated GCD math, number theory	800	x17421
755A	PolandBall and Hypothesis brute force, graphs, math, number theory	800	x17525
1658B	Marin and Anti-coprime Permutation combinatorics, math, number theory	800	x18365
1762A	Divide and Conquer greedy, math, number theory	800	x18545
1717A	Madoka and Strange Thoughts math, number theory	800	x19146
1740A	Factorise N+M constructive algorithms, number theory	800	x19606
1605A	A.M. Deviation math, number theory	800	x20327
1712B	Woeful Permutation constructive algorithms, greedy, number theory	800	x21239
1629B	GCD Arrays greedy, math, number theory	800	x22970
1514A	Perfectly Imperfect Array math, number theory	800	x23794
1916A	2023 constructive algorithms, implementation, math, number theory	800	x24517
1388A	Captain Flint and Crew Recruitment brute force, greedy, math, number theory	800	x24549
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x24573
1968A	Maximize? brute force, math, number theory	800	x24708
1525A	Potion-making math, number theory	800	x25070
1312A	Two Regular Polygons geometry, greedy, math, number theory	800	x25327
1455A	Strange Functions math, number theory	800	x26031
1768A	Greatest Convex greedy, math, number theory	800	x28007
1859A	United We Stand constructive algorithms, math, number theory	800	x29307
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x29870
1553A	Digits Sum math, number theory	800	x30150
1549A	Gregor and Cryptography math, number theory	800	x31344
822A	I'm bored with life implementation, math, number theory	800	x31692
1899A	Game with Integers games, math, number theory	800	x37847
1325A	EhAb AnD gCd constructive algorithms, greedy, number theory	800	x38199
1389A	LCM Problem constructive algorithms, greedy, math, number theory	800	x38373
1520B	Ordinary Numbers brute force, math, number theory	800	x42853
749A	Bachgold Problem greedy, implementation, math, number theory	800	x46510
1370A	Maximum GCD greedy, implementation, math, number theory	800	x48764
472A	Design Tutorial: Learn from Math math, number theory	800	x57018
630A	Again Twenty Five! number theory	800	x62036

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