/* package whatever; // don't place package name! */
 
/* The class name doesn't have to be Main, as long as the class is not public. */
class Main
{
  public static void main (String[] args) throws java.lang.Exception
  {
      for (int index = 0; index < 20; ++index)
      {
          int i = (int)Math.round( Math.sqrt(8*index + 9));
          if (i*i == 8*index+9)
              System.out.print(1);
         else
             System.out.print(0);
 
      }
  }
}

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