using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            int input, input2;
            while (true)
            {
                Console.ForegroundColor = ConsoleColor.White;
                input = int.Parse(Console.ReadLine());
                //input2 = int.Parse(Console.ReadLine());

                Console.ForegroundColor = ConsoleColor.Green;
                Console.WriteLine(arrangedDigits(input).ToString());
                //Console.ReadKey();
            }
        }

        public static int power(int a)
        {
            if (a == 1)
                return 1;
            return power(a - 1) * a;
        }

        public static int digitSum(int a)
        {
            if (a < 10)
                return 1;
            return digitSum(a / 10) + 1;
        }

        public static int devide(int a, int b)
        {
            if (a <= 0)
                return 0;
            return devide(a - b, b) + 1;
        }

        public static int digits(int n, int digit)
        {
            if (n == 0)
                return 0;
            if (n % 10 == digit)
                return digits(n / 10, digit) + 1;
            else
                return digits(n / 10, digit);
        }

        public static int series(int n)
        {
            if (n <= 0)
                return 0;
            return series(n - 2) + (n - 1) * 2 + n * 4;
        }

        public static int maxDigit(int n)
        {
            if (n < 10)
            {
                return n;
            }
            int nextDigit = maxDigit(n / 10);
            if (nextDigit >= n % 10)
                return nextDigit;
            return n % 10;
        }

        public static bool arrangedDigits(int n)
        {
            if (n < 10)
                return true;
            bool result = arrangedDigits(n / 10);

            if (n % 10 >= (n / 10) % 10 && result)
                return true;
            return false;
        }
    }
}