import io
import sys

# import time

sys.stdin = io.StringIO('1000000\n5')

# start = time.time()
n, m = int(input()), int(input())
nums = [i for i in range(1, n + 1)]
nums.sort(key=lambda x: sum(map(int, list(str(x)))))
print(nums[m - 1])
# print(time.time() - start)  # 2s