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: 4224 - 9761 - 8262 + 6568 - 5026 + 916 - 5225 - 2454 - 1897

Output: 29365


Input: Consider Input: 1592 - 2894 - 9980 + 4503 - 4006 - 8338 - 6314 + 4860 + 6836

Output: 16925


Input: Consider Input: 6543 + 755 + 8452 - 380


Output: -2284