import java.util.*;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        char[] input = sc.next().toCharArray();
        input[3] = '8';
        String ans = String.valueOf(input);

        System.out.println(ans);
    }

    public static void printArray(int[] array){
        for(int i=0; i<array.length; i++){
            if(i == array.length){
                System.out.println(array[i]);
            } else {
                System.out.print(String.format("%d ", array[i]));
            }
        }
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        char[] input = sc.next().toCharArray();
        input[3] = '8';
        String ans = String.valueOf(input);

        System.out.println(ans);
    }

    public static void printArray(int[] array){
        for(int i=0; i<array.length; i++){
            if(i == array.length){
                System.out.println(array[i]);
            } else {
                System.out.print(String.format("%d ", array[i]));
            }
        }
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        char[] input = sc.next().toCharArray();
        input[3] = '8';
        String ans = String.valueOf(input);

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

        System.out.println(ans);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) char[] input = sc.next().toCharArray(); input sc.next().toCharArray() sc.next().toCharArray sc.next() sc.next sc input[3] = '8' input[3] input 3 '8' String ans = String.valueOf(input); ans String.valueOf(input) String.valueOf String input System.out.println(ans) System.out.println System.out System System.out ans String[] args args public static void printArray(int[] array){
        for(int i=0; i<array.length; i++){
            if(i == array.length){
                System.out.println(array[i]);
            } else {
                System.out.print(String.format("%d ", array[i]));
            }
        }
    } printArray {
        for(int i=0; i<array.length; i++){
            if(i == array.length){
                System.out.println(array[i]);
            } else {
                System.out.print(String.format("%d ", array[i]));
            }
        }
    } for(int i=0; i<array.length; i++){
            if(i == array.length){
                System.out.println(array[i]);
            } else {
                System.out.print(String.format("%d ", array[i]));
            }
        } int i=0; int i=0; i 0 i<array.length i array.length array array.length i++ i++ i {
            if(i == array.length){
                System.out.println(array[i]);
            } else {
                System.out.print(String.format("%d ", array[i]));
            }
        } {
            if(i == array.length){
                System.out.println(array[i]);
            } else {
                System.out.print(String.format("%d ", array[i]));
            }
        } if(i == array.length){
                System.out.println(array[i]);
            } else {
                System.out.print(String.format("%d ", array[i]));
            } i == array.length i array.length array array.length {
                System.out.println(array[i]);
            } System.out.println(array[i]) System.out.println System.out System System.out array[i] array i {
                System.out.print(String.format("%d ", array[i]));
            } System.out.print(String.format("%d ", array[i])) System.out.print System.out System System.out String.format("%d ", array[i]) String.format String "%d " array[i] array i int[] array array public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        char[] input = sc.next().toCharArray();
        input[3] = '8';
        String ans = String.valueOf(input);

        System.out.println(ans);
    }

    public static void printArray(int[] array){
        for(int i=0; i<array.length; i++){
            if(i == array.length){
                System.out.println(array[i]);
            } else {
                System.out.print(String.format("%d ", array[i]));
            }
        }
    }
} public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        char[] input = sc.next().toCharArray();
        input[3] = '8';
        String ans = String.valueOf(input);

        System.out.println(ans);
    }

    public static void printArray(int[] array){
        for(int i=0; i<array.length; i++){
            if(i == array.length){
                System.out.println(array[i]);
            } else {
                System.out.print(String.format("%d ", array[i]));
            }
        }
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        char[] input = sc.next().toCharArray();
        input[3] = '8';
        String ans = String.valueOf(input);

        System.out.println(ans);
    }

    public static void printArray(int[] array){
        for(int i=0; i<array.length; i++){
            if(i == array.length){
                System.out.println(array[i]);
            } else {
                System.out.print(String.format("%d ", array[i]));
            }
        }
    }
}
