Problemset - Codeforces

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Codeforces Round 914 (Div. 2)
31:14:55
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Difficulty: —

number theory

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Problems

#	Name
122A	Lucky Division brute force, number theory	1000	x108617
230B	T-primes binary search, implementation, math, number theory	1300	x64654
630A	Again Twenty Five! number theory	800	x55529
472A	Design Tutorial: Learn from Math math, number theory	800	x53733
313A	Ilya and Bank Account implementation, number theory	900	x50425
1475A	Odd Divisor math, number theory	900	x49800
1370A	Maximum GCD greedy, implementation, math, number theory	800	x45634
749A	Bachgold Problem greedy, implementation, math, number theory	800	x43848
1520B	Ordinary Numbers brute force, math, number theory	800	x40892
742A	Arpa’s hard exam and Mehrdad’s naive cheat implementation, math, number theory	1000	x37157
1389A	LCM Problem constructive algorithms, greedy, math, number theory	800	x36315
1325A	EhAb AnD gCd constructive algorithms, greedy, number theory	800	x36262
577A	Multiplication Table implementation, number theory	1000	x35989
1521A	Nastia and Nearly Good Numbers constructive algorithms, math, number theory	1000	x33356
1294C	Product of Three Numbers greedy, math, number theory	1300	x30027
1549A	Gregor and Cryptography math, number theory	800	x29805
822A	I'm bored with life implementation, math, number theory	800	x29589
1553A	Digits Sum math, number theory	800	x28931
1360D	Buying Shovels math, number theory	1300	x28923
766B	Mahmoud and a Triangle constructive algorithms, geometry, greedy, math, number theory, sortings	1000	x28817
1326A	Bad Ugly Numbers constructive algorithms, number theory	1000	x28449
1535B	Array Reodering brute force, greedy, math, number theory, sortings	900	x28339
1473B	String LCM brute force, math, number theory, strings	1000	x28321
1768A	Greatest Convex greedy, math, number theory	800	x27035
1899A	Game with Integers games, math, number theory	800	x26743
1526B	I Hate 1111 dp, math, number theory	1400	x26480
1859A	United We Stand constructive algorithms, math, number theory	800	x26047
26A	Almost Prime number theory	900	x25915
1364A	XXXXX brute force, data structures, number theory, two pointers	1200	x25514
1455A	Strange Functions math, number theory	800	x25495
919B	Perfect Number binary search, brute force, dp, implementation, number theory	1100	x24962
1372B	Omkar and Last Class of Math greedy, math, number theory	1300	x24887
1543A	Exciting Bets greedy, math, number theory	900	x24841
1312A	Two Regular Polygons geometry, greedy, math, number theory	800	x24822
1324A	Yet Another Tetris Problem implementation, number theory	900	x24764
1474B	Different Divisors binary search, constructive algorithms, greedy, math, number theory	1000	x24754
1541B	Pleasant Pairs brute force, implementation, math, number theory	1200	x24599
1525A	Potion-making math, number theory	800	x24539
1388A	Captain Flint and Crew Recruitment brute force, greedy, math, number theory	800	x24275
199A	Hexadecimal's theorem brute force, constructive algorithms, implementation, number theory	900	x23541
1514A	Perfectly Imperfect Array math, number theory	800	x23408
1471A	Strange Partition greedy, math, number theory	900	x23265
1515B	Phoenix and Puzzle brute force, geometry, math, number theory	1000	x23171
1370B	GCD Compression constructive algorithms, math, number theory	1100	x22674
1401C	Mere Array constructive algorithms, math, number theory, sortings	1300	x22662
1370C	Number Game games, math, number theory	1400	x22566
1238A	Prime Subtraction math, number theory	900	x22503
1629B	GCD Arrays greedy, math, number theory	800	x22417
1409C	Yet Another Array Restoration brute force, math, number theory	1200	x22120
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x21991
1108B	Divisors of Two Integers brute force, greedy, math, number theory	1100	x21530
1617B	GCD Problem brute force, constructive algorithms, math, number theory	900	x21239
483A	Counterexample brute force, implementation, math, number theory	1100	x21224
1511B	GCD Length constructive algorithms, math, number theory	1100	x21204
1712B	Woeful Permutation constructive algorithms, greedy, number theory	800	x20908
1855B	Longest Divisors Interval brute force, combinatorics, greedy, math, number theory	900	x20840
1720A	Burenka Plays with Fractions math, number theory	900	x20830
1542B	Plus and Multiply constructive algorithms, math, number theory	1500	x20788
1285C	Fadi and LCM brute force, math, number theory	1400	x20752
1858C	Yet Another Permutation Problem constructive algorithms, greedy, math, number theory	1000	x20390
1605A	A.M. Deviation math, number theory	800	x20008
1679A	AvtoBus brute force, greedy, math, number theory	900	x19948
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x19889
1872C	Non-coprime Split math, number theory	1100	x19867
1485A	Add and Divide brute force, greedy, math, number theory	1000	x19680
414B	Mashmokh and ACM combinatorics, dp, number theory	1400	x19547
1350B	Orac and Models dp, math, number theory	1400	x19520
682A	Alyona and Numbers constructive algorithms, math, number theory	1100	x19359
1742D	Coprime brute force, greedy, number theory	1100	x19304
1454D	Number into Sequence constructive algorithms, math, number theory	1300	x18997
519C	A and B and Team Training greedy, implementation, math, number theory	1300	x18867
1740A	Factorise N+M constructive algorithms, number theory	800	x18864
1562B	Scenes From a Memory brute force, constructive algorithms, implementation, math, number theory	1000	x18794
1717A	Madoka and Strange Thoughts math, number theory	800	x18750
1593D1	All are Same math, number theory	1100	x18708
1487B	Cat Cycle math, number theory	1200	x18448
1828B	Permutation Swap math, number theory	900	x18261
1762A	Divide and Conquer greedy, math, number theory	800	x18093
1658B	Marin and Anti-coprime Permutation combinatorics, math, number theory	800	x18033
776B	Sherlock and his girlfriend constructive algorithms, number theory	1200	x17758
1656C	Make Equal With Mod constructive algorithms, math, number theory, sortings	1200	x17645
1538F	Interesting Function binary search, dp, math, number theory	1500	x17317
755A	PolandBall and Hypothesis brute force, graphs, math, number theory	800	x16965
762A	k-th divisor math, number theory	1400	x16891
1411B	Fair Numbers brute force, number theory	1000	x16651
1332B	Composite Coloring brute force, constructive algorithms, greedy, math, number theory	1400	x16631
1810B	Candies constructive algorithms, math, number theory	800	x16601
1816A	Ian Visits Mary constructive algorithms, geometry, number theory	800	x16328
664A	Complicated GCD math, number theory	800	x16325
1407B	Big Vova brute force, greedy, math, number theory	1300	x16259
1609A	Divide and Multiply greedy, implementation, math, number theory	900	x16045
1051B	Relatively Prime Pairs greedy, math, number theory	1000	x16037
1736B	Playing with GCD math, number theory	1200	x16007
1487D	Pythagorean Triples binary search, brute force, math, number theory	1500	x16005
235A	LCM Challenge number theory	1600	x16004
573A	Bear and Poker implementation, math, number theory	1300	x15630
1462D	Add to Neighbour and Remove greedy, math, number theory	1400	x15621
1603A	Di-visible Confusion constructive algorithms, math, number theory	1300	x15584
1762B	Make Array Good constructive algorithms, implementation, number theory, sortings	1100	x15442
1780B	GCD Partition brute force, greedy, math, number theory	1100	x15381

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