import java.util.ArrayList;
import java.util.Scanner;

/**
 * Created by kolinsol on 5/5/17.
 */
public class Runner {
    public static void main(String[] args) {
        Runner runner = new Runner();
        Scanner input = new Scanner(System.in);
        System.out.println("Введите сумму цифр");
        Integer a = input.nextInt();
        System.out.println("Введите количество цифр");
        Integer n = input.nextInt();
        System.out.println(runner.findResult(a, n));
    }

    private Integer getDigitSum(Integer value) {
        Integer tempSum = 0;
        while(value > 0) {
            tempSum += (value % 10);
            value /= 10;
        }
        return tempSum;
    }

    private Integer getDigitCount(Integer value) {
        Integer tempCount = 0;
        while(value > 0) {
            tempCount++;
            value /= 10;
        }
        return tempCount;
    }

    private Integer findResult(Integer sum, Integer lengthLimit) {
        Boolean isBigger = false;
        Integer tempMaxValue = 0;
        for (int i = 0; !isBigger; i++) {
            if (getDigitCount(i) > lengthLimit) {
                isBigger = true;
            } else if (getDigitSum(i) == sum) {
                tempMaxValue = i;
            }
        }
        return tempMaxValue;
    }
}