import java.util.Calendar;
import java.text.SimpleDateFormat;

class Main
{
  public static void main (String[] args) throws java.lang.Exception
  {
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.HOUR_OF_DAY, 0);
        cal.set(Calendar.MINUTE, 0);
        cal.set(Calendar.SECOND, 0);
        cal.set(Calendar.MILLISECOND, 3600000 + 60000 + 1000 + 1);

        SimpleDateFormat timeFormat = new SimpleDateFormat("HH:mm:ss.SS");

        System.out.println(timeFormat.format(cal.getTime()));
  }
}