import java.util.Scanner;

public class Main {
    public static void main(String[] arg){
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        char[] s2 = s.toCharArray();
        s2[3] = '8';
        System.out.println(s2);
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] arg){
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        char[] s2 = s.toCharArray();
        s2[3] = '8';
        System.out.println(s2);
    }
} Main public static void main(String[] arg){
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        char[] s2 = s.toCharArray();
        s2[3] = '8';
        System.out.println(s2);
    } main {
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        char[] s2 = s.toCharArray();
        s2[3] = '8';
        System.out.println(s2);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s = sc.nextLine(); s sc.nextLine() sc.nextLine sc char[] s2 = s.toCharArray(); s2 s.toCharArray() s.toCharArray s s2[3] = '8' s2[3] s2 3 '8' System.out.println(s2) System.out.println System.out System System.out s2 String[] arg arg public class Main {
    public static void main(String[] arg){
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        char[] s2 = s.toCharArray();
        s2[3] = '8';
        System.out.println(s2);
    }
} public class Main {
    public static void main(String[] arg){
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        char[] s2 = s.toCharArray();
        s2[3] = '8';
        System.out.println(s2);
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] arg){
        Scanner sc = new Scanner(System.in);
        String s = sc.nextLine();
        char[] s2 = s.toCharArray();
        s2[3] = '8';
        System.out.println(s2);
    }
}