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:
3561 + 2090 - 1286 - 2259 - 7069 + 5058

Ex Output:
7027


Ex Input:
4266 - 8914 - 9115 - 7595 - 3820 + 191 + 3199 - 4910

Ex Output:
35230


Ex Input:
4068 + 7949 + 6952 - 2495 - 1000 - 8628

Ex Output:

1290