#include <iostream>
#include <fstream>
using namespace std;
ifstream fin ("cifre8.in");
ofstream fout ("cifre8.out");
int main()
{
unsigned int n, i, x, p=1, nrzero=0;
fin>>n;
for (i=1; i<=n; i++)
{
fin>>x;
p*=x;
}
while (p%10 == 0)
{
nrzero++;
p/=10;
}
fout<<nrzero<<endl<<p%10;
return 0;
}