求n!末尾0的个数

题目连接

/*£：离散数学。£：n!中2的个数>5的个数。£：2*5=10；*/#include<cstdio>#include<cstring>#include<iostream>using namespace std;typedef long long  LL;int N;int main (){    int T;scanf("%d",&T);    while(T--)    {        scanf("%d",&N);        int sum=0;        while(N)        {            sum+=N/5;            N/=5;        }        printf("%d\n",sum);    }    return 0;}