#include <iostream>
#include <iomanip>
#define DN 1000005
using namespace std;

int n;
double a[DN],b[DN],c[DN],d[DN],x[DN];

int main() {
	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) x[i]=d[i];
  	for(int i=1; i<n; ++i) {
  		double mu=a[i]/b[i];
  		b[i+1]-=mu*c[i];
  		x[i+1]-=mu*x[i];
  	}
  	x[n]/=b[n];
  	for(int i=n-1; i>0; --i) x[i]=(x[i]-c[i]*x[i+1])/b[i];
  	for(int i=1; i<=n; ++i) cout<<fixed<<setprecision(8)<<x[i]<<'\n';
}