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: 6120 - 9271 - 7167 + 6916 - 2510 + 7854 - 7909 - 1960 - 3775

Output: 23942


Input: Consider Input: 1780 - 963 - 3786 - 8938 + 5127 + 4125 + 8911 + 9677

Output: -12373


Input: Consider Input: 2870 + 1885 - 2679 - 5631 - 7397 - 5315 + 8256 + 5816 - 9636


Output: 17571