This code seems to solve the problem on my computer, but it I got WA on test#3! I've been trying for some hours to improve it. But I think I've already tried everything I know (which is certainly not too much!) Please, can you tell me what's wrong here?

#include<iostream>
#include<iomanip>
#include<cmath>
#include<cstdlib>
using namespace std;
int main()
{
 const int size = 128000;
 int counter=0, max;
 double x;
 double* array = new double[size];
 double* ptr = array;

 cout.setf(ios::fixed);
 cout.setf(ios::showpoint);
 cout.precision(4);

 while(1)
 {
  cin>>x;
  if(cin.eof())break;

  counter++;
 (*ptr)=sqrt(x);

  if(counter < size)
   ptr++;
 }

 if(counter < size)
  ptr--;

 max = counter;

 for(counter=max;counter > 0;counter--)
 {
  cout<<*ptr<<endl;
  ptr--;
 }

 return 0;
}