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: 2113 - 9339 + 3752 + 8710 + 3541 + 3240 + 6148 + 2019

Output: -15958


Input: Consider Input: 6789 - 6255 + 3477 - 8628 + 3410 + 5875 + 7308 + 2357

Output: -755


Input: Consider Input: 5714 - 3610 - 7646


Output: 16970