import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String N = sc.next();
        
        System.out.print("2018/01/");
        System.out.print(N.charAt(8));
        System.out.println(N.charAt(9));
        
    }
} import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String N = sc.next();
        
        System.out.print("2018/01/");
        System.out.print(N.charAt(8));
        System.out.println(N.charAt(9));
        
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String N = sc.next();
        
        System.out.print("2018/01/");
        System.out.print(N.charAt(8));
        System.out.println(N.charAt(9));
        
    } main {
        Scanner sc = new Scanner(System.in);
        String N = sc.next();
        
        System.out.print("2018/01/");
        System.out.print(N.charAt(8));
        System.out.println(N.charAt(9));
        
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String N = sc.next(); N sc.next() sc.next sc System.out.print("2018/01/") System.out.print System.out System System.out "2018/01/" System.out.print(N.charAt(8)) System.out.print System.out System System.out N.charAt(8) N.charAt N 8 System.out.println(N.charAt(9)) System.out.println System.out System System.out N.charAt(9) N.charAt N 9 String[] args args public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String N = sc.next();
        
        System.out.print("2018/01/");
        System.out.print(N.charAt(8));
        System.out.println(N.charAt(9));
        
    }
} public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String N = sc.next();
        
        System.out.print("2018/01/");
        System.out.print(N.charAt(8));
        System.out.println(N.charAt(9));
        
    }
} Main
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String N = sc.next();
        
        System.out.print("2018/01/");
        System.out.print(N.charAt(8));
        System.out.println(N.charAt(9));
        
    }
}