Problemset - Codeforces

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IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2)
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number theory

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Problems

#	Name
2053G	Naive String Splits binary search, brute force, greedy, hashing, math, number theory, strings	3400	x139
2050F	Maximum modulo equality data structures, divide and conquer, math, number theory	1700	x6372
2048A	Kevin and Combination Lock brute force, greedy, implementation, math, number theory	800	x19401
2045B	ICPC Square math, number theory	2000	x967
2044F	Easy Demon Problem binary search, brute force, data structures, math, number theory	1900	x3743
2044E	Insane Problem binary search, greedy, implementation, math, number theory	1300	x12827
2043D	Problem about GCD brute force, flows, math, number theory	1800	x5310
2043B	Digits math, number theory	1100	x16955
2041F	Segmentation Folds brute force, dfs and similar, number theory	2400	x342
2040F	Number of Cubes combinatorics, dp, math, number theory	2700	x240
2040D	Non Prime Tree brute force, constructive algorithms, dfs and similar, greedy, number theory, trees, two pointers	1900	x4270
2039G	Shohag Loves Pebae math, number theory	3500	x44
2039F2	Shohag Loves Counting (Hard Version) dp, number theory	3200	x184
2039F1	Shohag Loves Counting (Easy Version) combinatorics, dp, math, number theory	2800	x345
2039D	Shohag Loves GCD constructive algorithms, greedy, math, number theory	1700	x5238
2039C2	Shohag Loves XOR (Hard Version) bitmasks, brute force, math, number theory	1800	x3958
2039C1	Shohag Loves XOR (Easy Version) bitmasks, brute force, math, number theory	1200	x10296
2039A	Shohag Loves Mod constructive algorithms, number theory	800	x15498
2038K	Grid Walk brute force, dp, greedy, math, number theory	2100	x1234
2037G	Natlan Exploring bitmasks, combinatorics, data structures, dp, math, number theory	2000	x2607
2037C	Superultra's Favorite Permutation constructive algorithms, greedy, math, number theory	1000	x19907
2036G	Library of Magic binary search, constructive algorithms, divide and conquer, interactive, math, number theory	2200	x1276
2036F	XORificator 3000 bitmasks, dp, number theory, two pointers	1900	x3790
2035B	Everyone Loves Tres constructive algorithms, greedy, math, number theory	900	x16737
2034H	Rayan vs. Rayaneh brute force, dfs and similar, dp, number theory	3300	x100
2034A	King Keykhosrow's Mystery brute force, chinese remainder theorem, math, number theory	800	x15384
2033F	Kosuke's Sloth brute force, math, number theory	1800	x5689
2032A	Circuit greedy, implementation, math, number theory	800	x21946
2031C	Penchick and BBQ Buns constructive algorithms, math, number theory	1300	x12198
2029E	Common Generator brute force, constructive algorithms, math, number theory	2100	x2728
2021B	Maximize Mex brute force, greedy, math, number theory	1200	x15430
2020F	Count Leaves dp, math, number theory	2900	x207
2020A	Find Minimum Operations bitmasks, brute force, greedy, math, number theory	800	x22708
2013E	Prefix GCD brute force, dp, greedy, math, number theory	2200	x3390
2008H	Sakurako's Test binary search, brute force, greedy, math, number theory	2100	x3020
2008G	Sakurako's Task binary search, greedy, math, number theory	1800	x5444
2008F	Sakurako's Box combinatorics, math, number theory	1400	x13096
2007C	Dora and C++ math, number theory	1500	x12913
2007A	Dora's Set greedy, math, number theory	800	x23240
2006C	Eri and Expanded Sets data structures, divide and conquer, math, number theory, two pointers	2300	x1735
2005D	Alter the GCD binary search, brute force, data structures, divide and conquer, implementation, number theory	2400	x924
2004E	Not a Nim Problem brute force, games, math, number theory	2100	x4205
2002F2	Court Blue (Hard Version) brute force, dp, math, number theory	2800	x452
2002F1	Court Blue (Easy Version) brute force, dfs and similar, dp, math, number theory	2600	x860
1998B	Minimize Equal Sum Subarrays constructive algorithms, math, number theory	1000	x24720
1996D	Fun binary search, brute force, combinatorics, math, number theory	1500	x16588
1995C	Squaring brute force, constructive algorithms, greedy, implementation, math, number theory	1800	x8898
1994H	Fortnite combinatorics, constructive algorithms, games, greedy, hashing, interactive, math, number theory, strings	3500	x713
1994D	Funny Game constructive algorithms, dsu, graphs, greedy, math, number theory, trees	1900	x5966
1993F2	Dyn-scripted Robot (Hard Version) chinese remainder theorem, math, number theory	2800	x436
1993F1	Dyn-scripted Robot (Easy Version) brute force, chinese remainder theorem, constructive algorithms, math, number theory	2400	x1033
1992F	Valuable Cards brute force, dp, greedy, number theory, two pointers	1900	x5959
1991H	Prime Split Game bitmasks, dp, fft, games, math, number theory	3300	x514
1991D	Prime XOR Coloring bitmasks, constructive algorithms, graphs, greedy, math, number theory	1900	x6865
1986G2	Permutation Problem (Hard Version) brute force, data structures, hashing, math, number theory	2500	x1144
1986G1	Permutation Problem (Simple Version) binary search, brute force, combinatorics, data structures, math, number theory	2200	x1558
1986E	Beautiful Array greedy, math, number theory, sortings	1700	x9166
1985G	D-Function combinatorics, math, number theory	1600	x9859
1985B	Maximum Multiple Sum brute force, math, number theory	800	x48297
1982D	Beauty of the mountains brute force, data structures, implementation, math, number theory	1700	x7435
1982B	Collatz Conjecture brute force, implementation, math, number theory	1200	x17471
1981D	Turtle and Multiplication constructive algorithms, dfs and similar, graphs, number theory	2400	x1743
1980D	GCD-sequence greedy, implementation, math, number theory	1400	x14860
1979C	Earning on Bets binary search, combinatorics, constructive algorithms, number theory	1200	x19411
1978F	Large Graph data structures, dfs and similar, dsu, graphs, number theory, two pointers	2400	x1384
1977C	Nikita and LCM brute force, data structures, dp, greedy, math, number theory, sortings	1900	x6959
1973F	Maximum GCD Sum Queries bitmasks, brute force, dp, implementation, number theory	3100	x246
1968C	Assembly via Remainders constructive algorithms, number theory	1000	x25848
1968A	Maximize? brute force, math, number theory	800	x35562
1967B2	Reverse Card (Hard Version) brute force, math, number theory	2200	x4049
1967B1	Reverse Card (Easy Version) brute force, math, number theory	1400	x13795
1965B	Missing Subsequence Sum bitmasks, constructive algorithms, greedy, number theory	1800	x6998
1957E	Carousel of Combinations brute force, combinatorics, dp, math, number theory	2400	x1326
1955G	GCD on a grid brute force, dfs and similar, dp, implementation, math, number theory	1900	x4757
1954E	Chain Reaction binary search, data structures, dsu, greedy, implementation, math, number theory	2200	x2421
1954C	Long Multiplication greedy, math, number theory	1200	x20144
1950E	Nearly Shortest Repeating Substring brute force, implementation, number theory, strings	1500	x15097
1950D	Product of Binary Decimals brute force, dp, implementation, number theory	1100	x23965
1946E	Girl Permutation combinatorics, dp, math, number theory	2200	x2653
1945H	GCD is Greater brute force, data structures, math, number theory	2600	x709
1945B	Fireworks math, number theory	900	x23407
1934E	Weird LCM Operations brute force, constructive algorithms, number theory	3000	x251
1933D	Turtle Tenacity: Continual Mods constructive algorithms, greedy, math, number theory, sortings	1200	x20949
1933C	Turtle Fingers: Count the Values of k brute force, implementation, math, number theory	1100	x23243
1933B	Turtle Math: Fast Three Task implementation, math, number theory	800	x33556
1932G	Moving Platforms graphs, math, number theory, shortest paths	2300	x1124
1932E	Final Countdown implementation, math, number theory	1600	x8614
1932B	Chaya Calendar number theory	1100	x21383
1931G	One-Dimensional Puzzle combinatorics, math, number theory	2000	x2953
1931D	Divisible Pairs combinatorics, math, number theory	1300	x20297
1928E	Modular Sequence brute force, constructive algorithms, dp, graphs, greedy, math, number theory	2300	x1781
1928C	Physical Education Lesson brute force, math, number theory	1600	x8926
1926E	Vlad and an Odd Ordering binary search, bitmasks, data structures, dp, implementation, math, number theory	1500	x12636
1925B	A Balanced Problemset? brute force, greedy, math, number theory	1200	x20693
1920C	Partitioning the Array brute force, math, number theory	1600	x14508
1917D	Yet Another Inversions Problem combinatorics, data structures, dp, implementation, math, number theory	2300	x1842
1916G	Optimizations From Chelsu divide and conquer, dp, number theory, trees	3500	x151
1916B	Two Divisors constructive algorithms, math, number theory	1000	x27162
1916A	2023 constructive algorithms, implementation, math, number theory	800	x26773
1909E	Multiple Lamps bitmasks, brute force, constructive algorithms, math, number theory	2400	x1439

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