
import java.util.*;
class Main{
	
    public static void main(String args[]){
    	Scanner sc=new Scanner(System.in);
    	String a=sc.next();
    	System.out.println("2018/"+a.substring(5,10));
    }
}
/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