Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
08:41:09
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Before contest
Codeforces Round 941 (Div. 2)
08:41:08
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Difficulty: —

number theory

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Problems

#	Name
122A	Lucky Division brute force, number theory	1000	x115599
230B	T-primes binary search, implementation, math, number theory	1300	x69609
630A	Again Twenty Five! number theory	800	x61640
472A	Design Tutorial: Learn from Math math, number theory	800	x56837
1475A	Odd Divisor math, number theory	900	x54854
313A	Ilya and Bank Account implementation, number theory	900	x53416
1370A	Maximum GCD greedy, implementation, math, number theory	800	x48567
749A	Bachgold Problem greedy, implementation, math, number theory	800	x46305
1520B	Ordinary Numbers brute force, math, number theory	800	x42691
742A	Arpa’s hard exam and Mehrdad’s naive cheat implementation, math, number theory	1000	x39720
1389A	LCM Problem constructive algorithms, greedy, math, number theory	800	x38227
1325A	EhAb AnD gCd constructive algorithms, greedy, number theory	800	x38007
577A	Multiplication Table implementation, number theory	1000	x37949
1899A	Game with Integers games, math, number theory	800	x37299
1521A	Nastia and Nearly Good Numbers constructive algorithms, math, number theory	1000	x35227
1294C	Product of Three Numbers greedy, math, number theory	1300	x32167
822A	I'm bored with life implementation, math, number theory	800	x31610
1549A	Gregor and Cryptography math, number theory	800	x31264
766B	Mahmoud and a Triangle constructive algorithms, geometry, greedy, math, number theory, sortings	1000	x31009
1360D	Buying Shovels math, number theory	1300	x30657
1553A	Digits Sum math, number theory	800	x30061
1473B	String LCM brute force, math, number theory, strings	1000	x29598
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x29564
1535B	Array Reodering brute force, greedy, math, number theory, sortings	900	x29521
1326A	Bad Ugly Numbers constructive algorithms, number theory	1000	x29335
1859A	United We Stand constructive algorithms, math, number theory	800	x29073
1526B	I Hate 1111 dp, math, number theory	1400	x28557
26A	Almost Prime number theory	900	x28423
1768A	Greatest Convex greedy, math, number theory	800	x27919
919B	Perfect Number binary search, brute force, dp, implementation, number theory	1100	x26784
1364A	XXXXX brute force, data structures, number theory, two pointers	1200	x26738
1541B	Pleasant Pairs brute force, implementation, math, number theory	1200	x26384
1543A	Exciting Bets greedy, math, number theory	900	x26284
1474B	Different Divisors binary search, constructive algorithms, greedy, math, number theory	1000	x26227
1372B	Omkar and Last Class of Math greedy, math, number theory	1300	x26064
1455A	Strange Functions math, number theory	800	x25982
1312A	Two Regular Polygons geometry, greedy, math, number theory	800	x25281
1324A	Yet Another Tetris Problem implementation, number theory	900	x25239
1525A	Potion-making math, number theory	800	x25040
199A	Hexadecimal's theorem brute force, constructive algorithms, implementation, number theory	900	x25003
1388A	Captain Flint and Crew Recruitment brute force, greedy, math, number theory	800	x24527
1916A	2023 constructive algorithms, implementation, math, number theory	800	x24438
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x24415
1471A	Strange Partition greedy, math, number theory	900	x24413
1515B	Phoenix and Puzzle brute force, geometry, math, number theory	1000	x24085
1514A	Perfectly Imperfect Array math, number theory	800	x23767
1855B	Longest Divisors Interval brute force, combinatorics, greedy, math, number theory	900	x23583
1370C	Number Game games, math, number theory	1400	x23485
1916B	Two Divisors constructive algorithms, math, number theory	1000	x23472
1401C	Mere Array constructive algorithms, math, number theory, sortings	1300	x23393
1238A	Prime Subtraction math, number theory	900	x23222
1370B	GCD Compression constructive algorithms, math, number theory	1100	x23059
1629B	GCD Arrays greedy, math, number theory	800	x22944
1409C	Yet Another Array Restoration brute force, math, number theory	1200	x22713
1617B	GCD Problem brute force, constructive algorithms, math, number theory	900	x22351
1108B	Divisors of Two Integers brute force, greedy, math, number theory	1100	x22336
483A	Counterexample brute force, implementation, math, number theory	1100	x22135
1542B	Plus and Multiply constructive algorithms, math, number theory	1500	x21992
1511B	GCD Length constructive algorithms, math, number theory	1100	x21924
1285C	Fadi and LCM brute force, math, number theory	1400	x21898
1858C	Yet Another Permutation Problem constructive algorithms, greedy, math, number theory	1000	x21863
1872C	Non-coprime Split math, number theory	1100	x21845
1679A	AvtoBus brute force, greedy, math, number theory	900	x21737
1720A	Burenka Plays with Fractions math, number theory	900	x21695
1742D	Coprime brute force, greedy, number theory	1100	x21462
1712B	Woeful Permutation constructive algorithms, greedy, number theory	800	x21210
1485A	Add and Divide brute force, greedy, math, number theory	1000	x20748
414B	Mashmokh and ACM combinatorics, dp, number theory	1400	x20721
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x20712
1350B	Orac and Models dp, math, number theory	1400	x20521
1828B	Permutation Swap math, number theory	900	x20514
682A	Alyona and Numbers constructive algorithms, math, number theory	1100	x20411
1605A	A.M. Deviation math, number theory	800	x20316
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x20215
1454D	Number into Sequence constructive algorithms, math, number theory	1300	x19690
1487B	Cat Cycle math, number theory	1200	x19580
1740A	Factorise N+M constructive algorithms, number theory	800	x19571
1593D1	All are Same math, number theory	1100	x19538
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x19478
519C	A and B and Team Training greedy, implementation, math, number theory	1300	x19315
776B	Sherlock and his girlfriend constructive algorithms, number theory	1200	x19238
1562B	Scenes From a Memory brute force, constructive algorithms, implementation, math, number theory	1000	x19150
1945B	Fireworks math, number theory	900	x19111
1717A	Madoka and Strange Thoughts math, number theory	800	x19103
1762A	Divide and Conquer greedy, math, number theory	800	x18504
1656C	Make Equal With Mod constructive algorithms, math, number theory, sortings	1200	x18441
1658B	Marin and Anti-coprime Permutation combinatorics, math, number theory	800	x18345
1538F	Interesting Function binary search, dp, math, number theory	1500	x18280
1932B	Chaya Calendar number theory	1100	x18142
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x18073
1899B	250 Thousand Tons of TNT brute force, implementation, number theory	1100	x17939
762A	k-th divisor math, number theory	1400	x17881
1411B	Fair Numbers brute force, number theory	1000	x17711
755A	PolandBall and Hypothesis brute force, graphs, math, number theory	800	x17501
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x17489
664A	Complicated GCD math, number theory	800	x17369
1736B	Playing with GCD math, number theory	1200	x17213
1810B	Candies constructive algorithms, math, number theory	800	x17116
1332B	Composite Coloring brute force, constructive algorithms, greedy, math, number theory	1400	x17013
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x16982

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