import java.util.Scanner;

public class Main{
  public static void main(String[] args){
    Scanner s = new  Scanner(System.in);
    String str = s.next();
    System.out.println(str.replace("2017", "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