题目中说的a的范围是<=1000000000

> #include <iostream>
> 
> using namespace std;
> 
> void main ()
> {
> 	int times,a,i,sum;
> 	cin>>times;
> 	while(times--)
> 	{
> 		sum=0;
> 		cin>>a;
> 		for( i=5;i<200000000;i*=5 )
> 		{
> 			if ( i<=a )
> 			{
> 				sum+=a/i;
> 			}
> 			else
> 				break;
> 		}
> 		cout<<sum<<endl;
> 	}
> }