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from typing import List

class Solution:

def reorderLogFiles(self, logs: List[str]) -> List[str]:

letters, digits = [], []

for log in logs:

if log.split()[1].isdigit():

digits.append(log)

else:

letters.append(log)

# 두 개의 키를 람다 표현식으로 정렬

letters.sort(key=lambda x: (x.split()[1:], x.split()[0]))

return letters + digits