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:
5610 - 3034 + 9312 + 7337 + 2731 + 8581 + 5926 - 2102 + 2137

Ex Output:
-25278


Ex Input:
8711 + 5319 - 3967 - 9285 + 2276

Ex Output:
14368


Ex Input:
4971 - 4835 - 3555 - 4099

Ex Output:

17460