import java.text.SimpleDateFormat;
import java.util.*;

class Main {
	static Scanner sc = new Scanner(System.in);
	public static void main(String[] args) {
		
		String s = sc.next();
		int y = Integer.parseInt(s.substring(0,4));
		int m = Integer.parseInt(s.substring(5,7)) - 1;
		int d = Integer.parseInt(s.substring(8,10));
		
		Calendar cl = Calendar.getInstance();
		cl.set(y, m, d);
		cl.add(Calendar.DATE, 2);
		
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd");
		System.out.println(sdf.format(cl.getTime()));
		
	}
}