#include <iostream>
#include <iomanip>
#include <algorithm>
#include <iomanip>

using namespace std;

int N;
double A[100002], B[100002], C[100002], D[100002];
double R[100002];

int main()
{
	cin.sync_with_stdio(false);
	
	cin >> N;
	for (int i = 1; i <= N; ++i)
		cin >> A[i] >> B[i] >> C[i] >> D[i];
	
	for (int i = 1; i < N; ++i)
		if (A[i] != 0)
		{
			B[i + 1] -= 1.0 * (A[i] / B[i]) * C[i];
			D[i + 1] -= 1.0 * (A[i] / B[i]) * D[i];
			A[i] = 0;
		}
	for (int i = N; i >= 1; --i)
	{
		R[i] = D[i] / B[i];
		D[i - 1] -= 1.0 * R[i] * C[i - 1];
		C[i - 1] = 0;
	}
	
	for (int i = 1; i <= N; ++i)
		cout << fixed << setprecision(8) << R[i] << '\n';
}