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: 1562 + 8343 + 8480

Output: -15261


Input: Consider Input: 8838 + 1241 - 4918 - 8353 - 4691 - 5880

Output: 31439


Input: Consider Input: 5592 - 2923 + 9487 - 4732 + 9171 + 8556 + 3894 + 4481 - 3061


Output: -19281