import java.util.Scanner;
class Calender{
    void date(int year){
        if(year % 400 == 0 || year % 4 == 0 && year % 100 != 0){
            System.out.println("12.09."+year);
        }
        else{
            System.out.println("13.09."+year);
        }
    }
}
public class Main{
    public static void main(String [] args){
        Scanner sc = new Scanner(System.in);
        if (!sc.hasnextInt()) {
            System.out.println("Invalid input");
            return;
        }
        int year = sc.nextInt();
        if(year<0){
            System.out.println("-1");
            return;
        }
        Calender c = new Calender();
        c.date(year);
    }
}