#include <bits/stdc++.h>

using namespace std;
void fast_io() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
}

int main() {
    fast_io();
    long long a, b, c, d;
    cin >> a >> b >> c >> d;
    cout << a * c - b * d << " " << a * d + b * c << endl;
}