#include <iostream>
#include <cstdio>

using namespace std;

int n;

int main() {
    // freopen("sum.in", "r", stdin);
    // freopen("sum.out", "w", stdout);

    scanf("%d", &n);

    for (int a = 1; a <= n; ++a) {
        int b = n - a;
        if (__builtin_popcount(a) != 1 && __builtin_popcount(b) != 1) {
            printf("%d %d\n", a, b);
            break;
        }
        if (a >= b) {
            puts("-1");
            break;
        }
    }

    return 0;
}