백준 함수 관련 문제(기초)

숫자 n개의 합

def sum(a):
	ans = 0
    for num in a:
    	ans += num
    return ans

self number

def d(n):
    a = 0
    for x in list(str(n)):
        a = a + int(x)
    return int(n) + a

a = []
for i in range(1,10001):
    k = d(i)
    a.append(k)

for b in range(1, 10001):
    if b in a:
        pass
    else:
        print(b)