import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
      Scanner in = new Scanner(System.in);

      String str = in.next();

      String str2 = str.substring(8,10);

      System.out.println("2018/01/"+str2);

  }


}

/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