#include<stdio.h>
FILE *f,*g;
int main()
{
f=fopen("fact.in","r");
g=fopen("fact.out","w");
long int p,i,x=0;
int x[10000]={0}
fscanf(f,"%ld",&p);
i=0;
while(p!=0)
{
x[i]=x[i]+5;
if(x[i]==10) { x[i]=0; i++; }
p--;
}
if(a[i]==0) { fprintf(g,"%d",-1); }
 else {
          for(i=0;i<p;i++)
           {
                   fprinf(g,"%d",x[i]);
           }
      }
return 0;
}