import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

       String s=sc.next();
       String y[]=s.split("/");
        System.out.printf("2018/01/%s",y[2]);
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

       String s=sc.next();
       String y[]=s.split("/");
        System.out.printf("2018/01/%s",y[2]);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

       String s=sc.next();
       String y[]=s.split("/");
        System.out.printf("2018/01/%s",y[2]);
    } main {
        Scanner sc = new Scanner(System.in);

       String s=sc.next();
       String y[]=s.split("/");
        System.out.printf("2018/01/%s",y[2]);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s=sc.next(); s sc.next() sc.next sc String y[]=s.split("/"); y s.split("/") s.split s "/" System.out.printf("2018/01/%s",y[2]) System.out.printf System.out System System.out "2018/01/%s" y[2] y 2 String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

       String s=sc.next();
       String y[]=s.split("/");
        System.out.printf("2018/01/%s",y[2]);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

       String s=sc.next();
       String y[]=s.split("/");
        System.out.printf("2018/01/%s",y[2]);
    }
} Main
import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

       String s=sc.next();
       String y[]=s.split("/");
        System.out.printf("2018/01/%s",y[2]);
    }
}