import java.util.Scanner;

public class Main {

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

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

public class Main {

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