import java.util.*;

public class Main {
	static Scanner sc = new Scanner(System.in);
	public static void main(String[] args) {
		long n = sc.nextLong();
		int i = 1;
		
		boolean  b = false;
		for (; i<n; i++) {
			if (check(i)==false && check(n-i)==false) {b=true; break;}
		}
		
		if (b==true) {System.out.println(i+" "+(n-i));}
		else {System.out.println(-1);}
	}
	
	static boolean check (long n) {
		while (n != 1) {
			if (n%2 == 1) {return false;}
			n /= 2;
		}
		return true;
	}
}