#include <iostream>
#include <fstream>
#include <cstdlib>

using namespace std;

int main()
{ ifstream f("/home/www/class/een318/mystery.dat", ios::in | ios::binary);
  if (f.fail())
  { cerr << "file trouble\n";
    exit(1); }
  for (int line = 0; line < 600; line += 1)
  { short int data[600];
    f.read((char *) data, sizeof(data));
    for (int i = 0; i < 600; i += 1)
      if (data[i] == -500)
        cout << ".";
      else
        cout << "#";
    cout << "\n"; }
  f.close(); }