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:
6245 + 6705 - 5181 + 7350 - 5051 - 8984 - 476 + 3773

Ex Output:
8109


Ex Input:
9826 - 5862 + 4973 - 7723 - 8510 + 6631 + 9611 + 1510 + 489

Ex Output:
8707


Ex Input:
4286 + 2085 - 8347

Ex Output:

10548