#include <bits/stdc++.h>
using namespace std;
void evaluate(long long int n)
{
if (n == 1 || n == 2)
cout<<"-1";
else if (n &1 ==0) {
long long int var = 1LL * n * n / 4;
cout<< var - 1<<" "<<var + 1;
}
else if (n&1) {
long long int var = 1LL * n * n + 1;
cout<< var / 2 - 1<<" "<<var / 2;
}
else
cout<<" -1";
}
int main()
{
long long int n;
cin>>n;
evaluate(n);
return 0;
}