#include<iostream>
#include<cmath>
#include<climits>
#include<fstream>

using namespace std;

ifstream fin("fact.in");
ofstream fout("fact.out");

int main () {
    int i,p,k=0,n=0,x;
    fin >> p;
    n=5*p;
    if(p==0)fout<<"1";

    for (i=5;i<=n;i=i+5){
               x=i;
               while(x%5==0){x=x/5;
                                         k++;}
               if(k==p)fout<<i-5;
                  else if(k>p)"-1";
                        else fout<<"-1";
                    }


    fin.close();
	fout.close();

	return 0;

}