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: 2977 - 4470 - 76 + 164 + 8433 - 2054 - 4953

Output: 5933


Input: Consider Input: 365 + 3086 - 9118 - 8101 + 6550 + 80 - 1897 - 1498 - 8498

Output: 19761


Input: Consider Input: 5216 + 4367 + 5938 + 9564 - 5596 + 5358


Output: -14415