Problemset - Codeforces

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Codeforces Round 945 (Div. 2)
4 days

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Difficulty: —

number theory

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Problems

#	Name
758B	Blown Garland brute force, implementation, number theory	1100	x10061
898B	Proper Nutrition brute force, implementation, number theory	1100	x9280
1033B	Square Difference math, number theory	1100	x9192
735B	Urbanization greedy, number theory, sortings	1100	x8303
858A	k-rounding brute force, math, number theory	1100	x7854
68A	Irrational problem implementation, number theory	1100	x4817
1364A	XXXXX brute force, data structures, number theory, two pointers	1200	x26804
1541B	Pleasant Pairs brute force, implementation, math, number theory	1200	x26533
1409C	Yet Another Array Restoration brute force, math, number theory	1200	x22749
1487B	Cat Cycle math, number theory	1200	x19678
776B	Sherlock and his girlfriend constructive algorithms, number theory	1200	x19343
1656C	Make Equal With Mod constructive algorithms, math, number theory, sortings	1200	x18507
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x18241
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x17816
1736B	Playing with GCD math, number theory	1200	x17275
456B	Fedya and Maths math, number theory	1200	x16036
1954C	Long Multiplication greedy, math, number theory	1200	x15685
1149A	Prefix Sum Primes constructive algorithms, greedy, math, number theory	1200	x14735
1277B	Make Them Odd greedy, number theory	1200	x14635
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x13918
1076B	Divisor Subtraction implementation, math, number theory	1200	x12549
1133B	Preparation for International Women's Day math, number theory	1200	x12367
1068B	LCM math, number theory	1200	x11098
787A	The Monster brute force, math, number theory	1200	x11051
1877C	Joyboard math, number theory	1200	x10075
1143B	Nirvana brute force, math, number theory	1200	x10072
660A	Co-prime Array greedy, implementation, math, number theory	1200	x8533
361B	Levko and Permutation constructive algorithms, math, number theory	1200	x7884
59B	Fortune Telling implementation, number theory	1200	x6662
817A	Treasure Hunt implementation, math, number theory	1200	x6067
1184A1	Heidi Learns Hashing (Easy) brute force, math, number theory	1200	x5854
177B2	Rectangular Game number theory	1200	x2828
172B	Pseudorandom Sequence Period *special problem, implementation, number theory	1200	x2688
230B	T-primes binary search, implementation, math, number theory	1300	x70029
1294C	Product of Three Numbers greedy, math, number theory	1300	x32371
1360D	Buying Shovels math, number theory	1300	x30826
1372B	Omkar and Last Class of Math greedy, math, number theory	1300	x26182
1401C	Mere Array constructive algorithms, math, number theory, sortings	1300	x23453
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x20777
1454D	Number into Sequence constructive algorithms, math, number theory	1300	x19758
519C	A and B and Team Training greedy, implementation, math, number theory	1300	x19339
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x17239
1407B	Big Vova brute force, greedy, math, number theory	1300	x16684
573A	Bear and Poker implementation, math, number theory	1300	x16297
1603A	Di-visible Confusion constructive algorithms, math, number theory	1300	x16133
1931D	Divisible Pairs combinatorics, math, number theory	1300	x15868
1881D	Divide and Equalize math, number theory	1300	x14473
236B	Easy Number Challenge implementation, number theory	1300	x13488
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x13265
1826C	Dreaming of Freedom greedy, math, number theory	1300	x12803
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x12604
271B	Prime Matrix binary search, brute force, math, number theory	1300	x12386
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x12261
1899D	Yarik and Musical Notes hashing, math, number theory	1300	x12228
1174C	Ehab and a Special Coloring Problem constructive algorithms, number theory	1300	x11806
1823C	Strongly Composite greedy, math, number theory	1300	x11675
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x11384
1220B	Multiplication Table math, number theory	1300	x11338
371B	Fox Dividing Cheese math, number theory	1300	x10917
1155C	Alarm Clocks Everywhere math, number theory	1300	x9065
870C	Maximum splitting dp, greedy, math, number theory	1300	x8957
876B	Divisiblity of Differences implementation, math, number theory	1300	x8704
1209B	Koala and Lights implementation, math, number theory	1300	x7945
1113B	Sasha and Magnetic Machines greedy, number theory	1300	x7664
900B	Position in Fraction math, number theory	1300	x7632
515B	Drazil and His Happy Friends brute force, dsu, meet-in-the-middle, number theory	1300	x7364
840A	Leha and Function combinatorics, greedy, math, number theory, sortings	1300	x6953
633B	A Trivial Problem brute force, constructive algorithms, math, number theory	1300	x6541
158D	Ice Sculptures *special problem, brute force, number theory	1300	x6170
123A	Prime Permutation implementation, number theory, strings	1300	x3517
1526B	I Hate 1111 dp, math, number theory	1400	x28749
1370C	Number Game games, math, number theory	1400	x23557
1285C	Fadi and LCM brute force, math, number theory	1400	x22012
414B	Mashmokh and ACM combinatorics, dp, number theory	1400	x20877
1350B	Orac and Models dp, math, number theory	1400	x20613
762A	k-th divisor math, number theory	1400	x18077
1332B	Composite Coloring brute force, constructive algorithms, greedy, math, number theory	1400	x17085
1462D	Add to Neighbour and Remove greedy, math, number theory	1400	x16241
1519C	Berland Regional brute force, data structures, greedy, number theory, sortings	1400	x15987
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x15879
1714E	Add Modulo 10 brute force, math, number theory	1400	x15298
1627C	Not Assigning constructive algorithms, dfs and similar, number theory, trees	1400	x14057
1606C	Banknotes greedy, number theory	1400	x13756
1838C	No Prime Differences constructive algorithms, math, number theory	1400	x13452
1263C	Everyone is a Winner! binary search, math, meet-in-the-middle, number theory	1400	x13354
1758C	Almost All Multiples greedy, number theory	1400	x12920
1759D	Make It Round brute force, number theory	1400	x12260
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x11631
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x10790
757B	Bash's Big Day greedy, math, number theory	1400	x9843
1091C	New Year and the Sphere Transmission math, number theory	1400	x9798
1200C	Round Corridor math, number theory	1400	x9702
1609C	Complex Market Analysis binary search, dp, implementation, number theory, schedules, two pointers	1400	x9493
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x9395
1266C	Diverse Matrix constructive algorithms, greedy, math, number theory	1400	x9359
337B	Routine Problem greedy, math, number theory	1400	x9097
150A	Win or Freeze games, math, number theory	1400	x7584
1866B	Battling with Numbers combinatorics, math, number theory	1400	x7213
937B	Vile Grasshoppers brute force, math, number theory	1400	x6793
284A	Cows and Primitive Roots implementation, math, number theory	1400	x6369