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: 136 - 3238 + 3781 - 6552 - 4884 + 5366 - 657

Output: 6320


Input: Consider Input: 5778 + 1647 - 2800 + 3747 + 3449 + 90 - 2891 + 685

Output: 1851


Input: Consider Input: 9043 - 9141 - 580 + 1487 - 7349 + 6206 + 5328 - 2481


Output: 15573