I am getting WA in FCTRL problem.Below is the source code.Please help in pointing out the error.
#include <iostream>
using namespace std;
int main()
{
long int n = 0;
long int num = 0;
long int i=0;
long int a[100] = {0};
cin >> num;
for(;i<num;i++)
cin>>a[i];
for(i = 0;i < num;i++)
{
n = a[i];
long int sum = 0;
while((n/5)!=0)
{
sum += n/5;
n = n/5;
}
cout<<sum<<endl;
}
return 0;
}