Simple calculator
Can you write a simple calculator?
The input contains 1 integer, an operation +-*/, and another integer. The output should contain the result of the expression. If the operation is not one of the +-*/, the program should print Unsupported operation. If the program encounters division by 0, it should print Cannot divide by 0.
| Input | Output | 
|---|---|
| 2 | 4 | 
| 2 | Cannot divide by 0 | 
Constraints
Time limit: 2 seconds
Memory limit: 512 MB
Output limit: 1 MB