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: 6245 + 6705 - 5181 + 7350 - 5051 - 8984 - 476 + 3773
Example Output: 8109

Example Input: 4148 + 9216 - 5756 - 5558 + 2801 - 7501 + 1939 + 3102 + 6894
Example Output: -989

Example Input: 8967 + 529 - 1163 - 2651 + 7174 - 2929
Example Output:
8007