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

public class Main {
    static HashMap<String,Integer>dp;
    public static void main(String []args){
        Scanner in=new Scanner(System.in);
        String str=in.nextLine();
        StringBuilder sb=new StringBuilder(str);
        System.out.println(sb.replace(0,4,"2018"));
    }
}





/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