Problemset - Codeforces

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Codeforces Round 945 (Div. 2)
01:16:51
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Difficulty: —

number theory

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Problems

#	Name
630A	Again Twenty Five! number theory	800	x62249
472A	Design Tutorial: Learn from Math math, number theory	800	x57138
1370A	Maximum GCD greedy, implementation, math, number theory	800	x48986
749A	Bachgold Problem greedy, implementation, math, number theory	800	x46707
1520B	Ordinary Numbers brute force, math, number theory	800	x42971
1389A	LCM Problem constructive algorithms, greedy, math, number theory	800	x38489
1325A	EhAb AnD gCd constructive algorithms, greedy, number theory	800	x38288
1899A	Game with Integers games, math, number theory	800	x38246
822A	I'm bored with life implementation, math, number theory	800	x31747
1549A	Gregor and Cryptography math, number theory	800	x31404
1553A	Digits Sum math, number theory	800	x30185
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x30035
1859A	United We Stand constructive algorithms, math, number theory	800	x29481
1768A	Greatest Convex greedy, math, number theory	800	x28051
1968A	Maximize? brute force, math, number theory	800	x26839
1455A	Strange Functions math, number theory	800	x26049
1312A	Two Regular Polygons geometry, greedy, math, number theory	800	x25347
1525A	Potion-making math, number theory	800	x25080
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x24692
1916A	2023 constructive algorithms, implementation, math, number theory	800	x24598
1388A	Captain Flint and Crew Recruitment brute force, greedy, math, number theory	800	x24559
1514A	Perfectly Imperfect Array math, number theory	800	x23812
1629B	GCD Arrays greedy, math, number theory	800	x22998
1712B	Woeful Permutation constructive algorithms, greedy, number theory	800	x21273
1605A	A.M. Deviation math, number theory	800	x20348
1740A	Factorise N+M constructive algorithms, number theory	800	x19630
1717A	Madoka and Strange Thoughts math, number theory	800	x19167
1762A	Divide and Conquer greedy, math, number theory	800	x18581
1658B	Marin and Anti-coprime Permutation combinatorics, math, number theory	800	x18375
755A	PolandBall and Hypothesis brute force, graphs, math, number theory	800	x17542
664A	Complicated GCD math, number theory	800	x17455
1810B	Candies constructive algorithms, math, number theory	800	x17157
1789A	Serval and Mocha's Array brute force, math, number theory	800	x17110
1816A	Ian Visits Mary constructive algorithms, geometry, number theory	800	x16948
1583A	Windblume Ode math, number theory	800	x13538
1581A	CQXYM Count Permutations combinatorics, math, number theory	800	x13266
1475A	Odd Divisor math, number theory	900	x55487
313A	Ilya and Bank Account implementation, number theory	900	x53734
1535B	Array Reodering brute force, greedy, math, number theory, sortings	900	x29656
26A	Almost Prime number theory	900	x28713
1543A	Exciting Bets greedy, math, number theory	900	x26489
1324A	Yet Another Tetris Problem implementation, number theory	900	x25324
199A	Hexadecimal's theorem brute force, constructive algorithms, implementation, number theory	900	x25173
1471A	Strange Partition greedy, math, number theory	900	x24597
1855B	Longest Divisors Interval brute force, combinatorics, greedy, math, number theory	900	x23924
1238A	Prime Subtraction math, number theory	900	x23312
1617B	GCD Problem brute force, constructive algorithms, math, number theory	900	x22464
1679A	AvtoBus brute force, greedy, math, number theory	900	x21986
1720A	Burenka Plays with Fractions math, number theory	900	x21781
1828B	Permutation Swap math, number theory	900	x20756
1945B	Fireworks math, number theory	900	x19828
1609A	Divide and Multiply greedy, implementation, math, number theory	900	x16688
1764B	Doremy's Perfect Math Class math, number theory	900	x15284
84A	Toy Army math, number theory	900	x14598
267A	Subtractions math, number theory	900	x7152
122A	Lucky Division brute force, number theory	1000	x116500
742A	Arpa’s hard exam and Mehrdad’s naive cheat implementation, math, number theory	1000	x40016
577A	Multiplication Table implementation, number theory	1000	x38164
1521A	Nastia and Nearly Good Numbers constructive algorithms, math, number theory	1000	x35412
766B	Mahmoud and a Triangle constructive algorithms, geometry, greedy, math, number theory, sortings	1000	x31213
1473B	String LCM brute force, math, number theory, strings	1000	x29752
1326A	Bad Ugly Numbers constructive algorithms, number theory	1000	x29488
1474B	Different Divisors binary search, constructive algorithms, greedy, math, number theory	1000	x26481
1515B	Phoenix and Puzzle brute force, geometry, math, number theory	1000	x24190
1916B	Two Divisors constructive algorithms, math, number theory	1000	x23734
1858C	Yet Another Permutation Problem constructive algorithms, greedy, math, number theory	1000	x22008
1485A	Add and Divide brute force, greedy, math, number theory	1000	x20880
1968C	Assembly via Remainders constructive algorithms, number theory	1000	x19204
1562B	Scenes From a Memory brute force, constructive algorithms, implementation, math, number theory	1000	x19188
1411B	Fair Numbers brute force, number theory	1000	x17863
1051B	Relatively Prime Pairs greedy, math, number theory	1000	x16589
17A	Noldbach problem brute force, math, number theory	1000	x15135
1107B	Digital root math, number theory	1000	x14846
1732A	Bestie brute force, combinatorics, constructive algorithms, implementation, math, number theory	1000	x14444
1245A	Good ol' Numbers Coloring math, number theory	1000	x13898
1765M	Minimum LCM math, number theory	1000	x12768
299A	Ksusha and Array brute force, number theory, sortings	1000	x7761
177B1	Rectangular Game number theory	1000	x3994
919B	Perfect Number binary search, brute force, dp, implementation, number theory	1100	x26943
1370B	GCD Compression constructive algorithms, math, number theory	1100	x23113
1108B	Divisors of Two Integers brute force, greedy, math, number theory	1100	x22454
483A	Counterexample brute force, implementation, math, number theory	1100	x22262
1872C	Non-coprime Split math, number theory	1100	x22067
1511B	GCD Length constructive algorithms, math, number theory	1100	x21996
1742D	Coprime brute force, greedy, number theory	1100	x21797
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x20605
682A	Alyona and Numbers constructive algorithms, math, number theory	1100	x20541
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x20477
1593D1	All are Same math, number theory	1100	x19604
1932B	Chaya Calendar number theory	1100	x18492
1899B	250 Thousand Tons of TNT brute force, implementation, number theory	1100	x18187
1780B	GCD Partition brute force, greedy, math, number theory	1100	x16629
1762B	Make Array Good constructive algorithms, implementation, number theory, sortings	1100	x16209
1826B	Lunatic Never Content math, number theory	1100	x15842
797A	k-Factorization implementation, math, number theory	1100	x14071
1787B	Number Factorization greedy, math, number theory	1100	x12724
633A	Ebony and Ivory brute force, math, number theory	1100	x12339
1166B	All the Vowels Please constructive algorithms, math, number theory	1100	x11260
630J	Divisibility math, number theory	1100	x10697
946B	Weird Subtraction Process math, number theory	1100	x10674

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