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:
6042 + 4328 - 5171 + 23 + 4485 + 8072 + 4298

Ex Output:
-9993


Ex Input:
5630 - 3377 + 9205 - 4071 + 9580 - 7049

Ex Output:
1342


Ex Input:
2559 - 8424 + 6925 - 5709 + 4305 + 5137 + 3613

Ex Output:

-3288