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: 4292 - 7663 + 6931 + 1332 + 5698 + 4887 - 9479 - 1571 - 6095

Output: 10252


Input: Consider Input: 3782 + 4127 - 1265 - 1395 + 2430 + 6990 + 8573 + 8170

Output: -23848


Input: Consider Input: 4939 + 9842 + 3339 - 3030


Output: -5212