#include <conio.h>
#include <iostream>

using namespace std;

int main()
{
  int bla=0;
  while(bla!=13)
  {
    bla=getch();
    system("cls");
    if(bla==0 || bla==224)
    {
      bla=getch();
    }    
    switch(bla)
    {
      case 72:
        cout << "\x18\n";
        break;
      case 80:
        cout << "\x19\n";
        break;
      case 75:
        cout << "\x1B\n";
        break;
      case 77:
        cout << "\x1A\n";
        break;
      default:
        cout << "\x01";
    }
  }
  return 0;
}