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: 4993 - 9334 - 5415 + 8531 - 5640 + 896 + 3114 - 1984
Example Output: 14825

Example Input: 171 - 966 + 1234 - 1722 - 4406 + 9773 - 1161
Example Output: -2581

Example Input: 2262 - 1254 - 2348 + 836 + 291 + 519 - 4151 - 2406
Example Output:
10775