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