// The DateDisplayer takes a date formatted as mm/dd/yy and outputs
// the full year version of that date 
// Kelli Wiseth
// 19-June-2004
// Platform: 	Wintel [Windows 2000]
// JDK version:	JDK 1.4.1
//
//******************************************************************************

import java.io.*;

class DateDisplayer {
        static final int Y2K_YEAR=29;

        public static void main (String args[]) throws IOException {
                BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
                String date;
                int display_year;
                
                System.out.println("Enter a date in the form mm/dd/yy");
                System.out.flush();
                date=stdin.readLine();
                display_year=Integer.parseInt(date.substring(6));

                if (display_year>=Y2K_YEAR)
                System.out.println(date.substring(0,5) + "/19" + date.substring(6));
                else
                System.out.println(date.substring(0,5) + "/20" + date.substring(6));
          

                }//main
}//class