C. Book Reading time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Polycarp is reading a book consisting of nn pages numbered from 11 to nn. Every time he finishes the page with the number div
Given a set of distinct positive integers, find the largest subset such that every pair (Si, Sj) of elements in this subset satisfies: Si % Sj = 0 or Sj % Si = 0. If there are multiple solutions, return any subset is fine. Example 1: nums: [1,2,3] Re
题意是求在给定的 P 进制下,满足条件的数字 B 有多少.条件:若任何一个数的各位数字之和能被 B 整除,则该数可被 B 整除. 在 p 进制下,每个正整数都可以都可以表示为:a0*p^0 + a1*p^1 + a2*p^2 +…+an*p^n (a0*p^0 + a1*p^1 + a2*p^2 +…+an*p^n) % B = 0 ⇒(a0 % B + a1 % B * p^1 % B +…+ an % B * p^n % B)% B = 0 (1) (a0 + a1 + … + an) %
sum 题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=5776 Description Given a sequence, you're asked whether there exists a consecutive subsequence whose sum is divisible by m. output YES, otherwise output NO Input The first line of the input has an i