package codeup100;

import java.util.Scanner;

public class c1027 {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

String date = sc.next();

sc.close();

String[] dateSplit = date.split("\\.");

System.out.printf("%s-%s-%s", dateSplit[2], dateSplit[1], dateSplit[0]);

}

}