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:
7451 + 2964 + 1609 - 9543 - 679 + 381 - 9788 - 8125

Ex Output:
30632


Ex Input:
5610 - 3034 + 9312 + 7337 + 2731 + 8581 + 5926 - 2102 + 2137

Ex Output:
-25278


Ex Input:
2236 + 489 + 8826 - 120 + 6823

Ex Output:

-13782