import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		System.out.println(s.substring(0, 3) + '8' + s.substring(4, 10)); 
	}
} 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();
		System.out.println(s.substring(0, 3) + '8' + s.substring(4, 10)); 
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		System.out.println(s.substring(0, 3) + '8' + s.substring(4, 10)); 
	} main {
		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		System.out.println(s.substring(0, 3) + '8' + s.substring(4, 10)); 
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s = sc.next(); s sc.next() sc.next sc System.out.println(s.substring(0, 3) + '8' + s.substring(4, 10)) System.out.println System.out System System.out s.substring(0, 3) + '8' + s.substring(4, 10) s.substring(0, 3) + '8' + s.substring(4, 10) s.substring(0, 3) s.substring s 0 3 '8' s.substring(4, 10) s.substring s 4 10 String[] args args public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		System.out.println(s.substring(0, 3) + '8' + s.substring(4, 10)); 
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		System.out.println(s.substring(0, 3) + '8' + s.substring(4, 10)); 
	}
} Main
import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		System.out.println(s.substring(0, 3) + '8' + s.substring(4, 10)); 
	}
}
