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: 6666 + 4068 + 1057 + 5398 + 7947
Example Output: -11804

Example Input: 6754 + 927 + 3154 - 9301
Example Output:
11974