import java.time.LocalDate;
import java.time.format.DateTimeFormatter;
import java.util.Scanner;

public class No721_DieTertia {
    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);
        String value1 = scan.next();
        scan.close();

        // String value1 = "2018/09/24";

        String result = plusTwoDays(value1);
        System.out.println(result);
    }

    public static String plusTwoDays(String value1) {

        LocalDate date = LocalDate.parse(value1, DateTimeFormatter.ofPattern("yyyy/MM/dd"));
        String datePlusTwoDays = date.plusDays(2).format(DateTimeFormatter.ofPattern("yyyy/MM/dd"));

        return datePlusTwoDays;
    }
}