import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner sc = new Scanner(System.in);
        
        long n = sc.nextLong();
        
        long ansA = -1;
        long ansB = -1;
        for(long b = n - 2 ; b > 1 ; b--){
            
            long a = n - b;
            
            if((b % 2 == 0 && !myJudge(b)) || (a % 2 == 0 && !myJudge(a))){
                continue;
            }
            
            ansA = a;
            ansB = b;
            break;
            
        }
        
        System.out.println(ansA == -1 ? -1 : ansA+" "+ansB);
           
    }
    
    private static boolean myJudge(long num){
        
        for(int i = 1 ; i < 61 ; i++){
            if(num == Math.pow(2 , i)){
                return false;
            }
        }
        return true;
        
    }
    
}