import java.util.Scanner;
public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[]ss = S.toCharArray();
    
    ss[3] = '8';
    	 System.out.println(String.valueOf(ss));
    }
} 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();
    char[]ss = S.toCharArray();
    
    ss[3] = '8';
    	 System.out.println(String.valueOf(ss));
    }
} Main public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[]ss = S.toCharArray();
    
    ss[3] = '8';
    	 System.out.println(String.valueOf(ss));
    } main {
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[]ss = S.toCharArray();
    
    ss[3] = '8';
    	 System.out.println(String.valueOf(ss));
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String S = sc.next(); S sc.next() sc.next sc char[]ss = S.toCharArray(); ss S.toCharArray() S.toCharArray S ss[3] = '8' ss[3] ss 3 '8' System.out.println(String.valueOf(ss)) System.out.println System.out System System.out String.valueOf(ss) String.valueOf String ss String[] args args public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[]ss = S.toCharArray();
    
    ss[3] = '8';
    	 System.out.println(String.valueOf(ss));
    }
} public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[]ss = S.toCharArray();
    
    ss[3] = '8';
    	 System.out.println(String.valueOf(ss));
    }
} Main
import java.util.Scanner;
public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    String S = sc.next();
    char[]ss = S.toCharArray();
    
    ss[3] = '8';
    	 System.out.println(String.valueOf(ss));
    }
}