import java.util.Scanner;

public class Main {
    public static void main(String[] args) 
    {
        Scanner scanner = new Scanner(System.in);
        String date = scanner.nextLine();
        char[] date_c = date.toCharArray();
        date_c[3] = '8';
        for(int i = 0; i < 10; i++)
        {
            System.out.print(date_c[i]);
        }
    }
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz