#include <bits/stdc++.h>
using namespace std;
int n,i;
double a[100100],b[100100],c[100100],d[100100],r[100100],x;
int main() {
  scanf("%d",&n);
  for (i=0; i<n; i++) scanf("%f",&a[i+1],&b[i],&c[i],&d[i]);
  for (i=1; i<n; i++) {
    x=a[i]/b[i-1];
    b[i]-=c[i-1]*x;
    d[i]-=d[i-1]*x;
  }
  for (i=n-1; i>=0; i--) r[i]=(d[i]-c[i]*r[i+1])/b[i];
  for (i=0; i<n; i++) printf("%.9f\n",r[i]);
  return 0;
}