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: 155 + 7497 + 4675 - 2329 - 9080 - 5510 - 2336 + 8701

Output: -1463


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

Output: -1886


Input: Consider Input: 6427 + 6985 + 4314 - 777 + 696 + 2168 - 8760 + 8332


Output: -6531