import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    s = s.replace("2017/01","2018/01");
    System.out.println(s);
  }
} import java.util.*; util.* java public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    s = s.replace("2017/01","2018/01");
    System.out.println(s);
  }
} Main public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    s = s.replace("2017/01","2018/01");
    System.out.println(s);
  } main {
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    s = s.replace("2017/01","2018/01");
    System.out.println(s);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s = sc.next(); s sc.next() sc.next sc s = s.replace("2017/01","2018/01") s s.replace("2017/01","2018/01") s.replace s "2017/01" "2018/01" System.out.println(s) System.out.println System.out System System.out s String[] args args public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    s = s.replace("2017/01","2018/01");
    System.out.println(s);
  }
} public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    s = s.replace("2017/01","2018/01");
    System.out.println(s);
  }
} Main
import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String s = sc.next();
    s = s.replace("2017/01","2018/01");
    System.out.println(s);
  }
}
