
import java.util.Scanner;

public class Main {

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

	}
} import java.util.Scanner; Scanner java.util public class Main {

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

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

	} main {
		Scanner scan = new Scanner(System.in);
		String s = scan.next();
		scan.close();
		char[] c=s.toCharArray();
		c[3]='8';
		System.out.println(c);

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

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

	}
} public class Main {

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

	}
} Main

import java.util.Scanner;

public class Main {

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

	}
}
