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:
318 - 2977 - 9352 - 3082 - 5224 + 3028 - 7022

Ex Output:
24947


Ex Input:
7298 + 5069 + 5167 + 9387 - 6886

Ex Output:
-5439


Ex Input:
6526 + 8872 + 4339 - 7570 + 5180 + 9178 + 9878 + 4328 + 1952

Ex Output:

-29631