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.

Input: Consider Input: 5299 - 8968 + 5239 + 1119

Output: 7909


Input: Consider Input: 344 + 4107 + 9401 + 4490 - 5191 - 1753 - 5869 + 8385 - 7325

Output: -5901


Input: Consider Input: 9945 + 3788 - 3673 + 5765 - 2765 - 4791


Output: 11621