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:
6142 + 418 - 7535 - 7185 - 5518 + 7544 - 1019 - 938 - 9490

Ex Output:
29865


Ex Input:
7266 - 5601 + 6292 - 3129 - 4781 - 6736 - 1566 - 7004

Ex Output:
29791


Ex Input:
2083 + 3952 + 3656 - 9236

Ex Output:

3711