#include <stdio.h>
#include <stdlib.h>
#include <math.h>

double Eval(double x, double *coeff, int n) {
  int i;
  double s=0.0;
  for (i=0; i<=n; i++)
    s+=coeff[i]*pow(x,(double)i);
  return s;
}

int main() {
  int i,n;
  double* a;
  double x, x2, h;

  scanf("%d",&n);
  a=malloc((n+1)*sizeof(double));
  for (i=0; i<=n; i++)
    scanf("%lf",&a[i]);
  scanf("%lf %lf %lf",&x,&x2,&h);
  while (x<=x2) {
    printf("%8.6lf %12.8e\n",x,Eval(x,a,n));
    x+=h;
  } 
  free(a);
}