import java.math.BigInteger;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        String s;
        Scanner in = new Scanner(System.in);
        s = in.nextLine();
        BigInteger k = new BigInteger(s);
        BigInteger[] powsOfNine = new BigInteger[s.length()+1];
        powsOfNine[0] = BigInteger.ONE;
        for(int i = 1; i <= s.length(); i++) {
            powsOfNine[i] = powsOfNine[i-1].multiply(BigInteger.valueOf(9));
            //System.out.println(powsOfNine[i]);
        }

        int j = s.length()-1;
        BigInteger sol = BigInteger.ZERO;
        while(k.compareTo(BigInteger.ZERO) > 0) {
            int digit = 0;
            while(k.subtract(powsOfNine[j]).compareTo(BigInteger.ZERO) >= 0) {
                digit++;
                k = k.subtract(powsOfNine[j]);
            }
            j--;
            System.out.print(digit);
        }
        System.out.println("");

    }

}