Problemset - Codeforces

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Codeforces Round 941 (Div. 1)
03:01:55
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Before contest
Codeforces Round 941 (Div. 2)
03:01:55
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Difficulty: —

number theory

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Problems

#	Name
1033B	Square Difference math, number theory	1100	x9142
735B	Urbanization greedy, number theory, sortings	1100	x8298
858A	k-rounding brute force, math, number theory	1100	x7841
68A	Irrational problem implementation, number theory	1100	x4799
1364A	XXXXX brute force, data structures, number theory, two pointers	1200	x26738
1541B	Pleasant Pairs brute force, implementation, math, number theory	1200	x26386
1409C	Yet Another Array Restoration brute force, math, number theory	1200	x22713
1487B	Cat Cycle math, number theory	1200	x19582
776B	Sherlock and his girlfriend constructive algorithms, number theory	1200	x19239
1656C	Make Equal With Mod constructive algorithms, math, number theory, sortings	1200	x18447
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x18076
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x17491
1736B	Playing with GCD math, number theory	1200	x17214
456B	Fedya and Maths math, number theory	1200	x15965
1149A	Prefix Sum Primes constructive algorithms, greedy, math, number theory	1200	x14652
1277B	Make Them Odd greedy, number theory	1200	x14600
1954C	Long Multiplication greedy, math, number theory	1200	x14493
1909B	Make Almost Equal With Mod bitmasks, constructive algorithms, math, number theory	1200	x13693
1076B	Divisor Subtraction implementation, math, number theory	1200	x12521
1133B	Preparation for International Women's Day math, number theory	1200	x12319
1068B	LCM math, number theory	1200	x11072
787A	The Monster brute force, math, number theory	1200	x11026
1877C	Joyboard math, number theory	1200	x9998
1143B	Nirvana brute force, math, number theory	1200	x9936
660A	Co-prime Array greedy, implementation, math, number theory	1200	x8511
361B	Levko and Permutation constructive algorithms, math, number theory	1200	x7877
59B	Fortune Telling implementation, number theory	1200	x6638
817A	Treasure Hunt implementation, math, number theory	1200	x6056
1184A1	Heidi Learns Hashing (Easy) brute force, math, number theory	1200	x5817
177B2	Rectangular Game number theory	1200	x2824
172B	Pseudorandom Sequence Period *special problem, implementation, number theory	1200	x2685
230B	T-primes binary search, implementation, math, number theory	1300	x69619
1294C	Product of Three Numbers greedy, math, number theory	1300	x32171
1360D	Buying Shovels math, number theory	1300	x30662
1372B	Omkar and Last Class of Math greedy, math, number theory	1300	x26066
1401C	Mere Array constructive algorithms, math, number theory, sortings	1300	x23395
1521B	Nastia and a Good Array constructive algorithms, math, number theory	1300	x20713
1454D	Number into Sequence constructive algorithms, math, number theory	1300	x19691
519C	A and B and Team Training greedy, implementation, math, number theory	1300	x19316
1850F	We Were Both Children brute force, implementation, math, number theory	1300	x16984
1407B	Big Vova brute force, greedy, math, number theory	1300	x16665
573A	Bear and Poker implementation, math, number theory	1300	x16271
1603A	Di-visible Confusion constructive algorithms, math, number theory	1300	x16085
1931D	Divisible Pairs combinatorics, math, number theory	1300	x15628
1881D	Divide and Equalize math, number theory	1300	x14230
236B	Easy Number Challenge implementation, number theory	1300	x13428
1601A	Array Elimination bitmasks, greedy, math, number theory	1300	x13146
1826C	Dreaming of Freedom greedy, math, number theory	1300	x12741
1864C	Divisor Chain bitmasks, constructive algorithms, math, number theory	1300	x12541
271B	Prime Matrix binary search, brute force, math, number theory	1300	x12336
1902C	Insert and Equalize brute force, constructive algorithms, greedy, math, number theory	1300	x12144
1899D	Yarik and Musical Notes hashing, math, number theory	1300	x12109
1174C	Ehab and a Special Coloring Problem constructive algorithms, number theory	1300	x11787
1823C	Strongly Composite greedy, math, number theory	1300	x11634
1220B	Multiplication Table math, number theory	1300	x11331
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x11306
371B	Fox Dividing Cheese math, number theory	1300	x10891
1155C	Alarm Clocks Everywhere math, number theory	1300	x9058
870C	Maximum splitting dp, greedy, math, number theory	1300	x8950
876B	Divisiblity of Differences implementation, math, number theory	1300	x8678
1209B	Koala and Lights implementation, math, number theory	1300	x7933
1113B	Sasha and Magnetic Machines greedy, number theory	1300	x7659
900B	Position in Fraction math, number theory	1300	x7620
515B	Drazil and His Happy Friends brute force, dsu, meet-in-the-middle, number theory	1300	x7357
840A	Leha and Function combinatorics, greedy, math, number theory, sortings	1300	x6953
633B	A Trivial Problem brute force, constructive algorithms, math, number theory	1300	x6535
158D	Ice Sculptures *special problem, brute force, number theory	1300	x6169
123A	Prime Permutation implementation, number theory, strings	1300	x3511
1526B	I Hate 1111 dp, math, number theory	1400	x28563
1370C	Number Game games, math, number theory	1400	x23487
1285C	Fadi and LCM brute force, math, number theory	1400	x21898
414B	Mashmokh and ACM combinatorics, dp, number theory	1400	x20751
1350B	Orac and Models dp, math, number theory	1400	x20523
762A	k-th divisor math, number theory	1400	x17882
1332B	Composite Coloring brute force, constructive algorithms, greedy, math, number theory	1400	x17013
1462D	Add to Neighbour and Remove greedy, math, number theory	1400	x16194
1519C	Berland Regional brute force, data structures, greedy, number theory, sortings	1400	x15921
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x15771
1714E	Add Modulo 10 brute force, math, number theory	1400	x15184
1627C	Not Assigning constructive algorithms, dfs and similar, number theory, trees	1400	x14012
1606C	Banknotes greedy, number theory	1400	x13714
1838C	No Prime Differences constructive algorithms, math, number theory	1400	x13389
1263C	Everyone is a Winner! binary search, math, meet-in-the-middle, number theory	1400	x13295
1758C	Almost All Multiples greedy, number theory	1400	x12864
1759D	Make It Round brute force, number theory	1400	x12009
1844D	Row Major constructive algorithms, greedy, math, number theory, strings	1400	x11578
1875C	Jellyfish and Green Apple bitmasks, greedy, math, number theory	1400	x10736
757B	Bash's Big Day greedy, math, number theory	1400	x9793
1091C	New Year and the Sphere Transmission math, number theory	1400	x9776
1200C	Round Corridor math, number theory	1400	x9586
1609C	Complex Market Analysis binary search, dp, implementation, number theory, schedules, two pointers	1400	x9470
1266C	Diverse Matrix constructive algorithms, greedy, math, number theory	1400	x9347
337B	Routine Problem greedy, math, number theory	1400	x9078
150A	Win or Freeze games, math, number theory	1400	x7560
1866B	Battling with Numbers combinatorics, math, number theory	1400	x7167
937B	Vile Grasshoppers brute force, math, number theory	1400	x6786
284A	Cows and Primitive Roots implementation, math, number theory	1400	x6364
248B	Chilly Willy math, number theory	1400	x5187
1542B	Plus and Multiply constructive algorithms, math, number theory	1500	x21994
1538F	Interesting Function binary search, dp, math, number theory	1500	x18283