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: 9237 + 5388 - 46 + 2616 + 8227 - 3578 - 5065 + 1176

Output: 519


Input: Consider Input: 6646 + 4878 - 8881 - 992 + 7276

Output: 4365


Input: Consider Input: 4729 + 3459 + 4966 + 9523


Output: -13219