import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    String s = sc.next();
    
    char[] c = s.toCharArray();
    
    System.out.println("2018/01/" + c[8] + c[9]);
  }
} import java.util.*; util.* java public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    String s = sc.next();
    
    char[] c = s.toCharArray();
    
    System.out.println("2018/01/" + c[8] + c[9]);
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    String s = sc.next();
    
    char[] c = s.toCharArray();
    
    System.out.println("2018/01/" + c[8] + c[9]);
  } main {
    Scanner sc = new Scanner(System.in);
    
    String s = sc.next();
    
    char[] c = s.toCharArray();
    
    System.out.println("2018/01/" + c[8] + c[9]);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s = sc.next(); s sc.next() sc.next sc char[] c = s.toCharArray(); c s.toCharArray() s.toCharArray s System.out.println("2018/01/" + c[8] + c[9]) System.out.println System.out System System.out "2018/01/" + c[8] + c[9] "2018/01/" + c[8] + c[9] "2018/01/" c[8] c 8 c[9] c 9 String[] args args public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    String s = sc.next();
    
    char[] c = s.toCharArray();
    
    System.out.println("2018/01/" + c[8] + c[9]);
  }
} public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    String s = sc.next();
    
    char[] c = s.toCharArray();
    
    System.out.println("2018/01/" + c[8] + c[9]);
  }
} Main
import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    String s = sc.next();
    
    char[] c = s.toCharArray();
    
    System.out.println("2018/01/" + c[8] + c[9]);
  }
}
