import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Scanner;

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

public class Main {
    public static void main(String[] args) {
        Main main = new Main();
        main.solve();
    }
    public void solve() {
        Scanner scan = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
        String S = scan.next();
        char[] data = S.toCharArray();
        data[3] = '8';
        System.out.println(String.valueOf(data));
    }
}
