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: 9240 - 5321 + 7584 - 9605 + 9674 - 5556 + 6400
Example Output: 6064

Example Input: 3782 + 4127 - 1265 - 1395 + 2430 + 6990 + 8573 + 8170
Example Output: -23848

Example Input: 7999 - 4122 - 7591
Example Output:
19712