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.

Input: Consider Input: 5634 - 7997 + 8248 + 1465 - 3986

Output: 7904


Input: Consider Input: 2219 - 6451 + 1224 + 2776 + 8750 - 8397 - 5833 - 9401 - 554

Output: 20105


Input: Consider Input: 2335 + 127 + 4039 - 4325 - 5458 + 4404 + 4456 + 9303 + 4545


Output: -14756