#include <iostream>

using namespace std;

int main()
{

  const int n = 255 * 1024 * 1024;
  double * x = new double[n];

  double sum=0.0;

  if (x==NULL)
  {
    cout << "Allocation failed" << endl;
    return(1);
  }

  for (int i=0;i<n;i++)
  {
    x[i]=1.0;
    sum+=x[i];
  }

  cout << " Computational sum is = " ;
  cout.width(20);
  cout.precision(12);
  cout << sum << endl;

  cout << " Mathematical sum is  = " ;
  cout.width(20);
  cout << n << endl;


  return(0);

}