https://school.programmers.co.kr/learn/courses/30/lessons/12903
python
def solution(s):
middle = len(s) // 2
if len(s) % 2 != 0:
return s[middle]
else:
return s[middle - 1: middle + 1]
if __name__ == "__main__":
result = solution("qwer")
print(result)
we