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: 4117 - 7011 - 9534 - 3901 - 9537 + 6979
Example Output: 27121

Example Input: 7442 + 227 + 52 + 2436 - 3303 + 8408 + 4314
Example Output: -4692

Example Input: 780 + 3603 + 3280 + 792 - 1294 + 8264 - 6683 - 1025
Example Output:
-6157