#include<iostream>
#include<vector>
#include<string>
#include<map>
#include<queue>
#include<set>
#include<deque>
#include<cmath>
#include<algorithm>
#include<functional>
#include<stack>
#include<tuple>
#include<bitset>
typedef long long ll;
using namespace std;

int main() {
	ll a, b, c, d;
	cin >> a >> b >> c >> d;

	cout << a * c - b * d << ' ' << a * d + b * c << endl;
}