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

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


