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:
5986 + 9293 + 3288 - 1791 + 6613 + 8185 - 7053

Ex Output:
-12549


Ex Input:
6054 - 4121 + 5615

Ex Output:
4560


Ex Input:
412 - 3349 + 6359 - 1721 - 9414 + 5619 - 3224

Ex Output:

6142