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: 4284 - 8233 + 2781 - 2769 - 5560 + 635 - 1706 + 1965 + 6794

Output: 10377


Input: Consider Input: 8243 + 5509 - 2652 - 916 - 1636 + 9824

Output: -1886


Input: Consider Input: 117 - 3952 - 5216 + 400 + 1299


Output: 7586