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.

Ex Input:
6108 + 2133 + 8600

Ex Output:
-4625


Ex Input:
3083 - 4468 - 7941 + 7484 + 2789

Ex Output:
5219


Ex Input:
7087 + 5381 - 8025 + 7599 + 1863 - 4773

Ex Output:

5042