import java .util.*;

public class Main{
  public static void main(String args[]){
    Scanner sc = new Scanner(System.in);
    String day = sc.next();
    String day_up = "2018/";
    
    for (int i = 5; i < 10; i++){
      day_up = day_up + day.substring(i, i+1);
    }
    System.out.println(day_up);
    
  }
}
/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