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: 9964 + 5009 - 6772 + 8761 + 2075 + 6292 + 4157 + 5194

Output: -14752


Input: Consider Input: 452 - 5631 - 8307 - 1886 + 4631 + 1695 + 4411 - 769

Output: 6308


Input: Consider Input: 4024 - 2501 + 1579 - 7835 + 8587 - 1634 + 1839 - 3899 + 9283


Output: -1395