#include <stdio.h>
int main()
{
long long int a,k,P;
freopen ("fact.in","r",stdin);
freopen ("fact.out","w",stdout);
scanf ("%lld",&P);

k=0;
a=0;   //numarul de cifre
while (a<P)
	{
	k=k+5;
	a++;
	if (k%25==0) a++;
	if (k%125==0) a++;
	if (k%625==0) a++;
	}
if (a!=P) printf ("-1");
if (a==P) printf ("%lld",k);
return 0;
}