import java.util.Scanner;


public class Main{

	public static void main(String args[]){

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

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

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

	public static void main(String args[]){

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

	public static void main(String args[]){

		Scanner sc = new Scanner(System.in);
		String s = sc.next();
		char c[] = s.toCharArray();
		
		c[3] = '8';
		
		String st = new String(c);
		System.out.println(st);
	}
} 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 c[] = s.toCharArray();
		
		c[3] = '8';
		
		String st = new String(c);
		System.out.println(st);
	}
}