Candy Distribution Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 6033 Accepted: 3351 Description N children standing in circle who are numbered 1 through N clockwise are waiting their candies. Their teacher distributes the candies by…
题目链接:http://poj.org/problem?id=2992 题目要求:Your task in this problem is to determine the number of divisors of Cnk. Just for fun -- or do you need any special reason for such a useful computation? 题目解析:这题也是TLE了无数遍,首先说一下求因子数目的函数是积性函数,积性函数即f(n)=f(a)*f(b)…