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:
9403 + 6381 - 6599 - 2097 - 3046

Ex Output:
14764


Ex Input:
4110 - 9440 + 557 + 7868 - 6315 + 2518 - 9049 + 3905 + 2052

Ex Output:
12014


Ex Input:
473 - 2568 + 9771 - 2525 + 3277 + 261 - 8230 + 6021

Ex Output:

-5534