题解 | #四则运算#
四则运算
https://www.nowcoder.com/practice/9999764a61484d819056f807d2a91f1e
import sys
s = input()
s = s.replace('{','(') # 字符.replace(旧字符，新字符)
s = s.replace('[','(')
s = s.replace(']',')')
s = s.replace('}',')')
print(int(eval(s))) #eval(字符串) 直接将结果
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