import java.util.*;
import java.io.*;

public class Main {
	public static void main(String[] args) throws IOException {
		Scanner sc = new Scanner(System.in);
		char s[] = sc.nextLine().toCharArray();
		s[0] = '2'; 
		s[1] = '0'; 
		s[2] = '1'; 
		s[3] = '8';
	   System.out.println(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