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: 7169 + 1918 - 7501 + 5160 + 9033 - 3341 + 4286

Output: -2386


Input: Consider Input: 9885 + 402 + 66 + 4818 + 2654 - 4301 + 2712 + 5842 - 2959

Output: 651


Input: Consider Input: 2499 - 9483 - 9317 + 969 - 3529 + 3985 + 4151 + 2282 + 5421


Output: 8020