Problemset - Codeforces

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Codeforces Round 940 (Div. 2) and CodeCraft-23
3 days
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Difficulty: —

number theory

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Problems

#	Name
122A	Lucky Division brute force, number theory	1000	x115277
230B	T-primes binary search, implementation, math, number theory	1300	x69382
630A	Again Twenty Five! number theory	800	x61307
472A	Design Tutorial: Learn from Math math, number theory	800	x56700
1475A	Odd Divisor math, number theory	900	x54610
313A	Ilya and Bank Account implementation, number theory	900	x53258
1370A	Maximum GCD greedy, implementation, math, number theory	800	x48448
749A	Bachgold Problem greedy, implementation, math, number theory	800	x46211
1520B	Ordinary Numbers brute force, math, number theory	800	x42609
742A	Arpa’s hard exam and Mehrdad’s naive cheat implementation, math, number theory	1000	x39608
1389A	LCM Problem constructive algorithms, greedy, math, number theory	800	x38141
1325A	EhAb AnD gCd constructive algorithms, greedy, number theory	800	x37910
577A	Multiplication Table implementation, number theory	1000	x37876
1899A	Game with Integers games, math, number theory	800	x36949
1521A	Nastia and Nearly Good Numbers constructive algorithms, math, number theory	1000	x35153
1294C	Product of Three Numbers greedy, math, number theory	1300	x32049
822A	I'm bored with life implementation, math, number theory	800	x31555
1549A	Gregor and Cryptography math, number theory	800	x31194
766B	Mahmoud and a Triangle constructive algorithms, geometry, greedy, math, number theory, sortings	1000	x30842
1360D	Buying Shovels math, number theory	1300	x30565
1553A	Digits Sum math, number theory	800	x30029
1473B	String LCM brute force, math, number theory, strings	1000	x29526
1535B	Array Reodering brute force, greedy, math, number theory, sortings	900	x29479
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x29368
1326A	Bad Ugly Numbers constructive algorithms, number theory	1000	x29299
1859A	United We Stand constructive algorithms, math, number theory	800	x28925
1526B	I Hate 1111 dp, math, number theory	1400	x28448
26A	Almost Prime number theory	900	x28290
1768A	Greatest Convex greedy, math, number theory	800	x27850
1364A	XXXXX brute force, data structures, number theory, two pointers	1200	x26685
919B	Perfect Number binary search, brute force, dp, implementation, number theory	1100	x26643
1541B	Pleasant Pairs brute force, implementation, math, number theory	1200	x26308
1543A	Exciting Bets greedy, math, number theory	900	x26211
1474B	Different Divisors binary search, constructive algorithms, greedy, math, number theory	1000	x26150
1372B	Omkar and Last Class of Math greedy, math, number theory	1300	x25984
1455A	Strange Functions math, number theory	800	x25966
1312A	Two Regular Polygons geometry, greedy, math, number theory	800	x25236
1324A	Yet Another Tetris Problem implementation, number theory	900	x25193
1525A	Potion-making math, number theory	800	x25030
199A	Hexadecimal's theorem brute force, constructive algorithms, implementation, number theory	900	x24938
1388A	Captain Flint and Crew Recruitment brute force, greedy, math, number theory	800	x24512
1916A	2023 constructive algorithms, implementation, math, number theory	800	x24364
1471A	Strange Partition greedy, math, number theory	900	x24345
1845A	Forbidden Integer constructive algorithms, implementation, math, number theory	800	x24292
1515B	Phoenix and Puzzle brute force, geometry, math, number theory	1000	x24058
1514A	Perfectly Imperfect Array math, number theory	800	x23750
1855B	Longest Divisors Interval brute force, combinatorics, greedy, math, number theory	900	x23450
1370C	Number Game games, math, number theory	1400	x23449
1401C	Mere Array constructive algorithms, math, number theory, sortings	1300	x23357
1916B	Two Divisors constructive algorithms, math, number theory	1000	x23346
1238A	Prime Subtraction math, number theory	900	x23167
1370B	GCD Compression constructive algorithms, math, number theory	1100	x23030
1629B	GCD Arrays greedy, math, number theory	800	x22921
1409C	Yet Another Array Restoration brute force, math, number theory	1200	x22692
1108B	Divisors of Two Integers brute force, greedy, math, number theory	1100	x22292
1617B	GCD Problem brute force, constructive algorithms, math, number theory	900	x22280
483A	Counterexample brute force, implementation, math, number theory	1100	x22090
1542B	Plus and Multiply constructive algorithms, math, number theory	1500	x21920
1511B	GCD Length constructive algorithms, math, number theory	1100	x21896
1285C	Fadi and LCM brute force, math, number theory	1400	x21859
1858C	Yet Another Permutation Problem constructive algorithms, greedy, math, number theory	1000	x21802
1872C	Non-coprime Split math, number theory	1100	x21782
1720A	Burenka Plays with Fractions math, number theory	900	x21639
1679A	AvtoBus brute force, greedy, math, number theory	900	x21616
1742D	Coprime brute force, greedy, number theory	1100	x21342
1712B	Woeful Permutation constructive algorithms, greedy, number theory	800	x21200
1485A	Add and Divide brute force, greedy, math, number theory	1000	x20679
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x20667
414B	Mashmokh and ACM combinatorics, dp, number theory	1400	x20648
1350B	Orac and Models dp, math, number theory	1400	x20458
1828B	Permutation Swap math, number theory	900	x20385
682A	Alyona and Numbers constructive algorithms, math, number theory	1100	x20359
1605A	A.M. Deviation math, number theory	800	x20304
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x20053
1454D	Number into Sequence constructive algorithms, math, number theory	1300	x19649
1740A	Factorise N+M constructive algorithms, number theory	800	x19540
1487B	Cat Cycle math, number theory	1200	x19520
1593D1	All are Same math, number theory	1100	x19507
519C	A and B and Team Training greedy, implementation, math, number theory	1300	x19300
776B	Sherlock and his girlfriend constructive algorithms, number theory	1200	x19191
1562B	Scenes From a Memory brute force, constructive algorithms, implementation, math, number theory	1000	x19135
1717A	Madoka and Strange Thoughts math, number theory	800	x19083
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x18915
1945B	Fireworks math, number theory	900	x18725
1762A	Divide and Conquer greedy, math, number theory	800	x18486
1656C	Make Equal With Mod constructive algorithms, math, number theory, sortings	1200	x18413
1658B	Marin and Anti-coprime Permutation combinatorics, math, number theory	800	x18329
1538F	Interesting Function binary search, dp, math, number theory	1500	x18230
1932B	Chaya Calendar number theory	1100	x18000
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x17990
762A	k-th divisor math, number theory	1400	x17835
1899B	250 Thousand Tons of TNT brute force, implementation, number theory	1100	x17819
1411B	Fair Numbers brute force, number theory	1000	x17649
755A	PolandBall and Hypothesis brute force, graphs, math, number theory	800	x17485
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x17343
664A	Complicated GCD math, number theory	800	x17317
1736B	Playing with GCD math, number theory	1200	x17164
1810B	Candies constructive algorithms, math, number theory	800	x17097
1332B	Composite Coloring brute force, constructive algorithms, greedy, math, number theory	1400	x16993
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x16923

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