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:
1185 - 6431 + 1326 - 2840 - 9276

Ex Output:
18406


Ex Input:
1562 + 8343 + 8480

Ex Output:
-15261


Ex Input:
9968 + 8963 - 2196 - 9380

Ex Output:

12581