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: 473 - 2568 + 9771 - 2525 + 3277 + 261 - 8230 + 6021

Output: -5534


Input: Consider Input: 5773 - 2989 + 8993 + 6702 + 2237 - 1402 - 4236 - 1857

Output: -1675


Input: Consider Input: 1951 + 9467 + 4719 - 5963 + 6369 - 7505 - 7105 - 2109 - 6047


Output: 10125