#include <bits/stdc++.h>

using namespace std;
using ll = long long;

int main() {
    ll a, b, c, d;
    cin >> a >> b >> c >> d;
    
    ll n = a*c-b*d, m = a*d+b*c;
    cout << n << ' ' << m << '\n';
    
    return 0;
}