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: 5371 + 2365 + 9586 - 6312 - 8369 - 7840 - 1823

Output: 17764


Input: Consider Input: 4325 + 2332 + 1470 - 1881 + 9204 - 2529 - 5460 + 5554

Output: -4365


Input: Consider Input: 7529 + 9900 + 4938 - 6474 + 91


Output: -926