865. Expression Calculator
0
Medium
Given a string s representing a valid expression, calculate and output its value.
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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