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:
5360 + 7507 - 3329 + 6345 - 9328 + 3114

Ex Output:
1051


Ex Input:
8053 - 8275 + 3672 - 7233 + 8748 - 1270 - 6997 - 7566 + 5689

Ex Output:
21285


Ex Input:
3561 - 7960 - 6041

Ex Output:

17562