In this task you will be given an arithmetic operation and you have to find its answer. The symbols of operators '+' and '-' has been swapped i.e you need to perform subtraction when you see a '+' symbol and  addition in case of '-' symbol.

Example Input: 4224 - 9761 - 8262 + 6568 - 5026 + 916 - 5225 - 2454 - 1897
Example Output: 29365

Example Input: 7457 - 9732 + 1691 + 2450 + 16 + 1610 + 1729
Example Output: 9693

Example Input: 2073 + 9172 + 1885 + 4049 + 9955 - 818 - 1507 - 7798
Example Output:
-12865