import java.util.*;
public class Main {
public static void main(String[] args) {
Scanner s = new Scanner(System.in);
int n = s.nextInt();
if (n == 1 || n == 2)
System.out.println("-1");
else if (n % 2 == 0) {
int var = 1 * n * n / 4;
System.out.print(var - 1 + " ");
System.out.println(var + 1 + " ");
}
else if (n % 2 != 0) {
int var = 1 * n * n + 1;
System.out.print(var / 2 - 1 + " ");
System.out.println(var / 2 + " ");
}
}
}
Close