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: 4266 - 8914 - 9115 - 7595 - 3820 + 191 + 3199 - 4910
Example Output: 35230

Example Input: 6492 - 3901 + 3666 + 9196 - 3917 - 133
Example Output: 1581

Example Input: 3520 - 3762 - 1402 - 9877
Example Output:
18561