#include<fstream.h>
int main()
{
	freopen ("fract.in","r",stdin);
	freopen ("fract.out","w",stdout);  
	unsigned long int i=0,x=0,f,p;
	scanf("%lu",&p);
	while(x<p)
	{
		i++;
		f=i*5;
		while(f%5==0)
		{	
			x++;
			f=f/5;
		}
	}
	if(p==0)
		printf("1");
	if(x==p && p!=0)
		printf("5*%lu",&i)
	else
		printf("-1");
	return 0;
}