#include <fstream>
using namespace std;
int main ()
{
    int i,P,N=1,nr=0,x,s;
    ifstream f("fact.in");
    ofstream g("fact.out");
    f>>P;
    for (i=1;i<10000000;i++)
       {N=N*i;
       nr=0;
        x=N;
    while (x!=0)
    {
        s=x%10;
        if (s==0)
        {nr++;}
        x/=10;
    }
    if(nr==P)
       {g<<N;
       return 0;}
       }
       g<<"-1";
        return 0;
}