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: 2653 + 9718 - 3237 + 2973 - 6895 - 18
Example Output: 112

Example Input: 555 + 5092 - 1562 + 5607 - 268
Example Output:
-8314