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: 1837 - 6362 - 226

Output: 8425


Input: Consider Input: 6163 + 7356 + 5264 - 4766 + 9373 + 1271

Output: -12335


Input: Consider Input: 3031 - 7190 - 2551 + 9933 - 1199 + 9314 - 3129


Output: -2147