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:
5355 - 3029 - 4426 - 467 + 3089 - 2982 - 4645 - 9070 - 3676

Ex Output:
30561


Ex Input:
4993 - 9334 - 5415 + 8531 - 5640 + 896 + 3114 - 1984

Ex Output:
14825


Ex Input:
7790 + 2125 + 2504 + 5284 - 4725 - 6707

Ex Output:

9309