#include <bits/stdc++.h>
#include <iterator>
using namespace std;
#define rep(i, n) for(int i=0; i<n; i++)
#define debug 1
using ll = long long;
using ld = long double;
const int mod = 998244353;
const double pi = atan2(0, -1);
#include <time.h>
#include <chrono>

int main() {
	ll A, B, C, D;
	cin >> A >> B >> C >> D;
	cout << A * C - B * D << " " << A * D + B * C << endl;
}