Problemset - Codeforces

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Codeforces Round #655 (Div. 2)
12:00:53
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Difficulty: —

number theory

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Problems

#	Name
472A	Design Tutorial: Learn from Math math, number theory	800	x26802
749A	Bachgold Problem greedy, implementation, math, number theory	800	x21889
1370A	Maximum GCD greedy, implementation, math, number theory	800	x20307
1325A	EhAb AnD gCd constructive algorithms, greedy, number theory	800	x19253
630A	Again Twenty Five! number theory	800	x18571
822A	I'm bored with life implementation, math, number theory	800	x17140
1312A	Two Regular Polygons geometry, greedy, math, number theory	800	x16574
755A	PolandBall and Hypothesis brute force, graphs, math, number theory	800	x10449
664A	Complicated GCD math, number theory	800	x9651
313A	Ilya and Bank Account implementation, number theory	900	x23358
1324A	Yet Another Tetris Problem implementation, number theory	900	x16877
1238A	Prime Subtraction math, number theory	900	x14199
199A	Hexadecimal's theorem brute force, constructive algorithms, implementation, number theory	900	x10436
26A	Almost Prime number theory	900	x10227
84A	Toy Army math, number theory	900	x8686
267A	Subtractions math, number theory	900	x3205
122A	Lucky Division brute force, number theory	1000	x49351
577A	Multiplication Table implementation, number theory	1000	x20342
742A	Arpa’s hard exam and Mehrdad’s naive cheat implementation, math, number theory	1000	x16926
1326A	Bad Ugly Numbers constructive algorithms, number theory	1000	x16779
766B	Mahmoud and a Triangle constructive algorithms, geometry, greedy, math, number theory, sortings	1000	x14654
1245A	Good ol' Numbers Coloring math, number theory	1000	x10386
1051B	Relatively Prime Pairs greedy, math, number theory	1000	x9361
1107B	Digital root math, number theory	1000	x9038
17A	Noldbach problem brute force, math, number theory	1000	x6282
299A	Ksusha and Array brute force, number theory, sortings	1000	x4049
177B1	Rectangular Game number theory	1000	x2491
919B	Perfect Number binary search, brute force, dp, implementation, number theory	1100	x14811
1370B	GCD Compression constructive algorithms, math, number theory	1100	x14726
1108B	Divisors of Two Integers brute force, greedy, math, number theory	1100	x13316
483A	Counterexample brute force, implementation, math, number theory	1100	x11301
682A	Alyona and Numbers constructive algorithms, math, number theory	1100	x10880
1166B	All the Vowels Please constructive algorithms, math, number theory	1100	x8262
758B	Blown Garland brute force, implementation, number theory	1100	x7745
946B	Weird Subtraction Process math, number theory	1100	x7722
633A	Ebony and Ivory brute force, math, number theory	1100	x7265
898B	Proper Nutrition brute force, implementation, number theory	1100	x6660
630J	Divisibility math, number theory	1100	x6533
735B	Urbanization greedy, number theory, sortings	1100	x6473
797A	k-Factorization implementation, math, number theory	1100	x6039
858A	k-rounding brute force, math, number theory	1100	x5577
1033B	Square Difference math, number theory	1100	x5485
68A	Irrational problem implementation, number theory	1100	x3152
1364A	XXXXX brute force, data structures, number theory, two pointers	1200	x13571
456B	Fedya and Maths math, number theory	1200	x10207
1149A	Prefix Sum Primes constructive algorithms, greedy, math, number theory	1200	x9000
776B	Sherlock and his girlfriend constructive algorithms, number theory	1200	x8785
1076B	Divisor Subtraction implementation, math, number theory	1200	x7982
787A	The Monster brute force, math, number theory	1200	x7780
1133B	Preparation for International Women's Day math, number theory	1200	x7733
1277B	Make Them Odd greedy, number theory	1200	x7715
1143B	Nirvana brute force, math, number theory	1200	x6703
1068B	LCM math, number theory	1200	x6432
660A	Co-prime Array greedy, implementation, math, number theory	1200	x4874
361B	Levko and Permutation constructive algorithms, math, number theory	1200	x4646
817A	Treasure Hunt implementation, math, number theory	1200	x4256
59B	Fortune Telling implementation, number theory	1200	x3686
1184A1	Heidi Learns Hashing (Easy) brute force, math, number theory	1200	x3657
172B	Pseudorandom Sequence Period *special problem, implementation, number theory	1200	x2010
177B2	Rectangular Game number theory	1200	x1909
230B	T-primes binary search, implementation, math, number theory	1300	x26883
1360D	Buying Shovels math, number theory	1300	x15018
1294C	Product of Three Numbers greedy, math, number theory	1300	x14233
519C	A and B and Team Training greedy, implementation, math, number theory	1300	x13312
573A	Bear and Poker implementation, math, number theory	1300	x11005
1174C	Ehab and a Special Coloring Problem constructive algorithms, number theory	1300	x8057
1220B	Multiplication Table math, number theory	1300	x7979
271B	Prime Matrix binary search, brute force, math, number theory	1300	x6834
912B	New Year's Eve bitmasks, constructive algorithms, number theory	1300	x6661
870C	Maximum splitting dp, greedy, math, number theory	1300	x6601
1155C	Alarm Clocks Everywhere math, number theory	1300	x6432
1209B	Koala and Lights implementation, math, number theory	1300	x6202
840A	Leha and Function combinatorics, greedy, math, number theory, sortings	1300	x6133
236B	Easy Number Challenge implementation, number theory	1300	x6116
876B	Divisiblity of Differences implementation, math, number theory	1300	x6057
515B	Drazil and His Happy Friends brute force, dsu, meet-in-the-middle, number theory	1300	x5880
371B	Fox Dividing Cheese math, number theory	1300	x5835
1113B	Sasha and Magnetic Machines greedy, number theory	1300	x5794
900B	Position in Fraction math, number theory	1300	x5771
158D	Ice Sculptures *special problem, brute force, number theory	1300	x5489
633B	A Trivial Problem brute force, constructive algorithms, math, number theory	1300	x4843
123A	Prime Permutation implementation, number theory, strings	1300	x2226
1370C	Number Game games, math, number theory	1400	x12337
1332B	Composite Coloring brute force, constructive algorithms, greedy, math, number theory	1400	x11183
1350B	Orac and Models dp, math, number theory	1400	x10923
414B	Mashmokh and ACM combinatorics, dp, number theory	1400	x10870
1285C	Fadi and LCM brute force, math, number theory	1400	x10866
1312C	Adding Powers bitmasks, greedy, implementation, math, number theory, ternary search	1400	x9785
762A	k-th divisor math, number theory	1400	x8884
1263C	Everyone is a Winner! binary search, math, meet-in-the-middle, number theory	1400	x7969
1200C	Round Corridor math, number theory	1400	x7010
1091C	New Year and the Sphere Transmission math, number theory	1400	x6995
1266C	Diverse Matrix constructive algorithms, greedy, math, number theory	1400	x6430
757B	Bash's Big Day greedy, math, number theory	1400	x6239
937B	Vile Grasshoppers brute force, math, number theory	1400	x5283
337B	Routine Problem greedy, math, number theory	1400	x5185
150A	Win or Freeze games, math, number theory	1400	x4742
284A	Cows and Primitive Roots implementation, math, number theory	1400	x4337
248B	Chilly Willy math, number theory	1400	x3436
576A	Vasya and Petya's Game math, number theory	1500	x8243

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