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:
1256 - 3248 - 3709 - 3019

Ex Output:
11232


Ex Input:
6666 + 4068 + 1057 + 5398 + 7947

Ex Output:
-11804


Ex Input:
47 - 9296 + 3414 + 8752 - 7812 - 2029

Ex Output:

7018