472. Calculator Lite
0
Medium
Given a string s representing an expression, calculate and output the value of this expression.
It is guaranteed that the given expression is always valid.
It is guaranteed that the given expression is always valid.
Input Format
The input consists of a single line containing a string s (the expression).
Output Format
Output the value of the expression as an integer.
Example
Input
3+5/2*4
Output
11
Constraints
* The length of the string s is between 1 and 10000.
* The string s consists of integers and operators ('+', '-', '*', '/') separated by some number of spaces.
* The string s consists of integers and operators ('+', '-', '*', '/') separated by some number of spaces.
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