chin_chopa

#include <iostream>

#include <algorithm>

using namespace std;

int main() {

	int a, b, n, m;

	cin >> a >> b >> n >> m;

	int mina = (n - 1) * a + n;
	int maxa = (n + 1) * a + n;

	int minb = (m - 1) * b + m;
	int maxb = (m + 1) * b + m;

	int l = max(mina, minb);
	int r = min(maxa, maxb);

	if (l > r)
		cout << -1;
	else
		cout << l << " " << r;

	return 0;
}