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: 8671 + 9945 - 8465 - 5276 + 1447

Output: 11020


Input: Consider Input: 1834 - 2630 + 3119 - 3024 - 1805 + 5287 + 9826

Output: -8939


Input: Consider Input: 712 + 7865 + 8251 - 3602 - 5025 + 5970 - 5768 + 1979 - 5142


Output: -3816