import java.util.*;

public class Main {
	public static void main (String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("yyyy/MM/dd");
		Date d = sdf.parse(sc.next());
		GregorianCalendar gc = new GregorianCalendar();
		gc.setTime(d);
		gc.add(Calendar.DATE, 2);
		System.out.println(sdf.format(gc.getTime()));
	}
}