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:
758 + 1664 + 5481 - 1654 - 1804 + 5232 - 9130

Ex Output:
969


Ex Input:
136 - 3238 + 3781 - 6552 - 4884 + 5366 - 657

Ex Output:
6320


Ex Input:
6334 - 6342 - 2741 - 7399 - 418 - 5677 - 2210 - 7641

Ex Output:

38762