import java.util.*;

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

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

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

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

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

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

    }
} Main
import java.util.*;

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

    }
}