import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        try (Scanner sc = new Scanner(System.in);) {
            solve(sc);
        }
    }

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

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

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

    public static void solve(Scanner sc) {
        char[] x = sc.next().toCharArray();
        x[3] = '8';
        System.out.println(x);
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        try (Scanner sc = new Scanner(System.in);) {
            solve(sc);
        }
    }

    public static void solve(Scanner sc) {
        char[] x = sc.next().toCharArray();
        x[3] = '8';
        System.out.println(x);
    }
}