/**
 *  - Meet Brahmbhatt
 *  - Hard work always pays off
**/
#include"bits/stdc++.h"
using namespace std;

#ifdef MeetBrahmbhatt
#include "debug.h"
#else
#define dbg(...) 72
#endif

#define endl "\n"
#define int long long

const long long INF = 4e18;

void solve() {
    int a, b, c, d;
    cin >> a >> b >> c >> d;
    cout << (a * c - b * d) << " " << (a * d + b * c);
}

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout << fixed << setprecision(9);
    int tt = 1;
    // cin >> tt;
    while (tt--) solve();
    return 0;
}