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: 9549 - 507 + 659 + 3404 - 9243

Output: 15236


Input: Consider Input: 2537 - 3199 + 5925 + 8172 + 3564 + 8810

Output: -20735


Input: Consider Input: 384 + 4554 - 73 + 8033


Output: -12130