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: 5125 - 607 + 8597 + 4804 + 5962 - 7812 - 176 - 9436 + 6198

Output: -2405


Input: Consider Input: 7528 + 4879 - 8285


Output: 10934