import java.util.Scanner;

public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);

    int N = Integer.parseInt(sc.next());

    int x = (N + 110) / 111;
    int ans = 111 * x;
    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);

    int N = Integer.parseInt(sc.next());

    int x = (N + 110) / 111;
    int ans = 111 * x;
    System.out.println(ans);
  }
} Main public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);

    int N = Integer.parseInt(sc.next());

    int x = (N + 110) / 111;
    int ans = 111 * x;
    System.out.println(ans);
  } main {

    Scanner sc = new Scanner(System.in);

    int N = Integer.parseInt(sc.next());

    int x = (N + 110) / 111;
    int ans = 111 * x;
    System.out.println(ans);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = Integer.parseInt(sc.next()); N Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int x = (N + 110) / 111; x (N + 110) / 111 (N + 110) N 110 111 int ans = 111 * x; ans 111 * x 111 x 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);

    int N = Integer.parseInt(sc.next());

    int x = (N + 110) / 111;
    int ans = 111 * x;
    System.out.println(ans);
  }
} public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);

    int N = Integer.parseInt(sc.next());

    int x = (N + 110) / 111;
    int ans = 111 * x;
    System.out.println(ans);
  }
} Main
import java.util.Scanner;

public class Main {

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);

    int N = Integer.parseInt(sc.next());

    int x = (N + 110) / 111;
    int ans = 111 * x;
    System.out.println(ans);
  }
}