#include <iostream>
#include <cstring>
#include <cmath>
#include <ostream>
#include <vector>
using namespace std;
    int n,m,k,i,t=1;
    int prm(int k)
    {
       for(i=2;i<=sqrt(k);i++){
       if(k%i==0)
       return 0;
       }
       return 1;
    }
    int main(){
    cin >> m;
    for (m>=5;m<=10000;m--)
    {
    if ((m%10==1||m%10==3||m%10==5||m%10==7||m%10==9)&&prm(m)&&prm(m-2))
    break;
    }  
    cout << m-2 << " " << m << std::endl;
}
