import java.util.Scanner;

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

public class Main {
	public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String s = sc.next();
        sc.close();
        
        char[] c= s.toCharArray();
        c[3] = '8';
        System.out.print(c);
	}
}