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: 3071 - 5299 + 206 + 3214 + 6040 + 5785 - 6760 - 8070

Output: 7955


Input: Consider Input: 9748 + 7907 + 7494 - 2074 + 9313

Output: -12892


Input: Consider Input: 8110 - 3572 + 6354 + 9124 + 9799


Output: -13595