#include<iostream.h>
#include<stdio.h>
#include<math.h>
int main(){


FILE *f = fopen ("fact.in","r");
FILE *g = fopen ("fact.out","w");

long p,n,c,i,j,m;

fscanf(f,"%d",&p);
n=p*5;
int ok=1,o=1;
c=0;
for(i=1;i<=n;i++){
        o=o+5;
	m=o;
		
	for(j=i;j<=n;j++){
		if((m%5 )== 0){
			c++;
			m/=5;
			}
		else
			break;
		if(m==1)
			break;
			}
	if(c>=p+1){
		fprintf(g,"-1");
		break;
		}
	if(c==p){
		
                fprintf(g,"%d",&o);
		}
}

fclose(f);
fclose(g);
return 0;
}