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: 136 - 3238 + 3781 - 6552 - 4884 + 5366 - 657

Output: 6320


Input: Consider Input: 6020 + 1977 + 708 + 1899 + 3704

Output: -2268


Input: Consider Input: 2019 + 3095 + 5800


Output: -6876