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: 7671 - 2300 - 9650 - 6692 + 7656 + 4940 - 2878 - 5602 + 7222

Output: 14975


Input: Consider Input: 1884 + 3670 - 3893 + 782 + 3288 - 7463 + 3214

Output: 2286


Input: Consider Input: 9541 - 7471 + 9630 - 4647 - 7443


Output: 19472