
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		
		System.out.println((n + 111 - 1) / 111 * 111);
	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		
		System.out.println((n + 111 - 1) / 111 * 111);
	}

} Main public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		
		System.out.println((n + 111 - 1) / 111 * 111);
	} main {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		
		System.out.println((n + 111 - 1) / 111 * 111);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc System.out.println((n + 111 - 1) / 111 * 111) System.out.println System.out System System.out (n + 111 - 1) / 111 * 111 (n + 111 - 1) / 111 (n + 111 - 1) n + 111 n 111 1 111 111 String[] args args public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		
		System.out.println((n + 111 - 1) / 111 * 111);
	}

} public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		
		System.out.println((n + 111 - 1) / 111 * 111);
	}

} Main

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		
		System.out.println((n + 111 - 1) / 111 * 111);
	}

}
