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:
9634 + 5896 + 2965 + 6949 - 2226 + 9649 - 3599 - 7110

Ex Output:
-2890


Ex Input:
2231 + 3985 - 3413 + 3695

Ex Output:

-2036