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:
5193 - 9816 - 9875 - 1011 + 1147 + 5023

Ex Output:
19725


Ex Input:
9292 - 7471 - 1025 - 8458 + 444

Ex Output:
25802


Ex Input:
8402 - 3080 + 9198 - 6086 + 5629 - 2746 + 6688 - 6084

Ex Output:

4883