#È. 中缀表达式转前缀表达式

    Type: Default 1000ms 128MiB

中缀表达式转前缀表达式

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说明

中缀表达式转前缀表达式,表达式运算符包括加、减、乘、除和括号运算。

输入格式

第一行为长度为N(N<1000)的中缀表达式字符串

输出格式

输出前缀表达式

样例

1+2*3
+1*23

第七届SWPU-ACM老生预选赛

Not Attended
Status
Done
Rule
ACM/ICPC
Problem
187
Start at
2022-9-19 14:00
End at
2022-10-28 14:00
Duration
936 hour(s)
Host
Partic.
45