#include <iostream>
#include <fstream>
#include <cstdio>
using namespace std;
ofstream g("factorial.out");
int P,m;
float t;
int main()
{
    freopen("factorial.in","r",stdin);
    scanf("%d", &P);
    s=0,
    nr0=1,
    nr=10,
    i=5;
    if(p==0) g<<1;
    while(s<=p){

        if(i==nr*10){nr=nr*10;
                     nr0++;
        }
        if(i%10==0) s+=nr0;
        else {
              long n=i;
              while(n%5==0){s++;
                         n/=5;
           }
        }
        if(s==p) g<<i;
        i+=5;
    }
    g<<-1;
}   return 0;
}