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.

Example Input: 220 - 5891 + 2603 + 7125 - 7551 - 3288
Example Output: 7222

Example Input: 9231 - 9608 - 4765 - 8085 - 9489
Example Output: 41178

Example Input: 5835 + 1801 - 8921 + 164 - 2952 - 115 + 8315
Example Output:
7543