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: 2605 - 3453 + 5543 + 2400 + 8799 + 3298 + 4981 + 9739 - 178

Output: -28524


Input: Consider Input: 2977 - 4470 - 76 + 164 + 8433 - 2054 - 4953

Output: 5933


Input: Consider Input: 3249 - 594 - 9160


Output: 13003