1212

#include <iostream>

using namespace std;

int main()
{
	double arr[2][2];
	double p1 = 0;
	double p2 = 0;
	double q1 = 0;
	double q2 = 0;
	double v = 0;

	for (int i = 0; i < 2; i++)
	{
		for (int j = 0; j < 2; j++)
		{
			cin >> arr[i][j];
		}
	}

	p1 = (arr[1][1] - arr[1][0]) / (arr[0][0] + arr[1][1] - arr[0][1] - arr[1][0]);
	p2 = (arr[0][0] - arr[0][1]) / (arr[0][0] + arr[1][1] - arr[0][1] - arr[1][0]);
	q1 = (arr[1][1] - arr[0][1]) / (arr[0][0] + arr[1][1] - arr[0][1] - arr[1][0]);
	q2 = (arr[0][0] - arr[1][0]) / (arr[0][0] + arr[1][1] - arr[0][1] - arr[1][0]);
	v = (arr[1][1] * arr[0][0] - arr[0][1] * arr[1][0]) / (arr[0][0] + arr[1][1] - arr[0][1] - arr[1][0]);

	cout << "p1 = " << p1 << " p2 = " << p2 << endl;
	cout << "q1 = " << q1 << " q2 = " << q2 << endl;
	cout << "v = " << v << endl;
}