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:
5125 - 607 + 8597 + 4804 + 5962 - 7812 - 176 - 9436 + 6198

Ex Output:
-2405


Ex Input:
86 - 2166 - 8519 - 7184 - 362 - 2203 + 1579 - 1133 + 3978

Ex Output:
16096


Ex Input:
7049 + 4313 - 4352 - 8865 + 5397 - 2549 - 8448 + 2928

Ex Output:

18625