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:
938 + 566 + 5270 + 5634 - 7451 - 114

Ex Output:
-2967


Ex Input:
5342 - 6456 - 9929 + 3119 - 1242 + 314

Ex Output:
19536


Ex Input:
1190 + 7825 + 3774 - 8094 - 8026 - 7443

Ex Output:

13154