题解 | #四则运算#投机取巧的解题方法
四则运算
https://www.nowcoder.com/practice/9999764a61484d819056f807d2a91f1e
str = input()
str1=""
for c in str:
if(c=='['):
c ='('
if(c=='{'):
c ='('
if(c==']'):
c =')'
if(c=='}'):
c =')'
str1+=c
answer = eval(str1)
print(int(answer))
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