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: 5773 - 2989 + 8993 + 6702 + 2237 - 1402 - 4236 - 1857

Output: -1675


Input: Consider Input: 2474 + 4117 - 310 - 2018 - 6488 - 3458 - 1404

Output: 12035


Input: Consider Input: 3164 - 160 + 1567 - 8453 - 9293 + 9371


Output: 10132