BruteForce 문제
natural_num = set(range(1, 10001))
generatd_num = set()
for i in range(1, 10001): # i = 850
for j in str(i): # j = '8', '5', '0'
i += int(j) # 850 + 8 + 5 + 0 = 863 = i
generatd_num.add(i) # 생성자가 있는 숫자들
self_num = sorted(natural_num - generatd_num)
for k in self_num:
print(k)