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: 1589 + 4479 - 6111 - 3158 - 7662

Output: 14041


Input: Consider Input: 5860 + 3039 - 7874 - 3584 - 144

Output: 14423


Input: Consider Input: 9518 + 5692 + 1605 + 5210 - 5643 + 4406 - 8200


Output: 6448