https://programmers.co.kr/learn/courses/30/lessons/42577
def solution2(p):
p.sort()
print(p)
for i, j in zip(p,p[1:]):
li = len(i)
if j[:li] == i:
return False
return True
def solution(pb):
d = dict()
pb.sort(key = lambda x: len(x))
for p in pb:
tmp = ''
for i in range(len(p)):
tmp += p[i]
if tmp in d:
return False
d[p] = 1
return True