#252 2Impare

#include <iostream>

using namespace std;

int main()
{
    int a,x,z;
    cin>>a;
    if(a%2==0)
    {
    x=a-1;
    z=a-3;
    }
    else
    {
    x=a-2;
    z=a-4;
    }
    cout<<z<<" "<<x;
    return 0;
}