#include<fstream.h>

long p;

ifstream f("fact.in");
ofstream g("fact.out");

int verif(int x)
 {  long f=0;
    while(x!=0)
     {    if(x%10==0) f++, x/=10;
	  else  return 0;
     }
    if(f==p)  return 1;
    return 0;
 }

void det_pal()
 {  int ok=0, i=1;
    double n=1;
    while(ok==0 && i<=)
     {    n = n*i;
	  if(verif(n)==1) g << n, ok = 1;
	  else i++;
     }
    if(ok==0) g << -1;
 }

int main()
 {  f >> p;
    if(p==0) g<< 1;
    det_pal();
    g.close();
    return 0;
 }