import java.util.Scanner;
public class Main {
	public static void main(String[] args){
		Scanner input = new Scanner(System.in);
		String s = input.nextLine();
		String[] array = s.split("/");
		s = "2018/"+array[1]+"/"+array[2];
		System.out.print(s);
	}
}

/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