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: 2862 - 964 + 1644
Example Output: 2182

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

Example Input: 1077 + 3386 + 2814 - 7054 + 9582
Example Output:
-7651