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:
4325 + 2332 + 1470 - 1881 + 9204 - 2529 - 5460 + 5554

Ex Output:
-4365


Ex Input:
6562 - 9064 - 1127 + 8483 + 5128 + 3972 - 4330 + 908 - 7990

Ex Output:
10582


Ex Input:
333 - 4061 - 2641 + 9107 - 876 + 913 - 2286 - 7626

Ex Output:

7803