import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String a = sc.nextLine();
    String ans = a.replace("2017","2018");
    System.out.println(ans);
  }

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

} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String a = sc.nextLine();
    String ans = a.replace("2017","2018");
    System.out.println(ans);
  } main {
    Scanner sc = new Scanner(System.in);
    String a = sc.nextLine();
    String ans = a.replace("2017","2018");
    System.out.println(ans);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String a = sc.nextLine(); a sc.nextLine() sc.nextLine sc String ans = a.replace("2017","2018"); ans a.replace("2017","2018") a.replace a "2017" "2018" System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String a = sc.nextLine();
    String ans = a.replace("2017","2018");
    System.out.println(ans);
  }

} public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String a = sc.nextLine();
    String ans = a.replace("2017","2018");
    System.out.println(ans);
  }

} Main
import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String a = sc.nextLine();
    String ans = a.replace("2017","2018");
    System.out.println(ans);
  }

}
