import java.util.*;

public class Main {
	public static void main (String[] args) {
    	Scanner sc = new Scanner(System.in);
    	long n = sc.nextLong();
    	long base = 1;
    	HashSet<Long> ng = new HashSet<>();
    	while (base <= n) {
    	    ng.add(base);
    	    base *= 2;
    	}
    	for (long i = 1; i <= n / 2; i++) {
    	    if (!ng.contains(i) && !ng.contains(n - i)) {
    	        System.out.println(i + " " + (n - i));
    	        return;
    	    }
    	}
    	System.out.println(-1);
	}
}