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: 7208 + 2074 + 2796 - 8783
Example Output: 11121

Example Input: 3140 - 7915 + 2559 - 9684 + 4182 - 683 + 7754 + 763 + 4851
Example Output: 1313

Example Input: 2813 + 6177 - 8751 + 4862 - 5278 - 4516
Example Output:
10319