import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int ans = 0;
		for (int i = 1; i <= n; i++) {
			if(check(i)) {
				ans += i;
			}
		}
		System.out.println(ans);
		
	}
	private static boolean check(int n) {
		while(n > 0) {
			if(n%10 == 2 || n%10 == 0||n%10 == 1||n%10 == 9) {
				return true;
			}
			n /= 10;
		}
		return false;
	}
}