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:
9864 - 5325 - 3230 - 5129 + 7733 + 3498 - 9250

Ex Output:
21567


Ex Input:
2303 + 151 - 7031 + 7349 - 8676 + 9084 + 9773

Ex Output:
-8347


Ex Input:
4945 - 9916 - 656 + 6515 - 5000 + 6599 - 9652

Ex Output:

17055