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: 3129 - 7101 - 6763 + 9310 + 4977
Example Output: 2706

Example Input: 961 + 1754 - 8392 + 2659 - 495 + 358
Example Output: 5077

Example Input: 3 - 8608 - 8848 + 4633
Example Output:
12826