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: 3171 - 3678 - 3096 - 5842 - 3188

Output: 18975


Input: Consider Input: 9964 + 5009 - 6772 + 8761 + 2075 + 6292 + 4157 + 5194

Output: -14752


Input: Consider Input: 9079 + 1616 - 412 - 3609 + 8806


Output: 2678