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:
1808 - 5352 - 8697 + 5058 + 8777 + 8089 - 9688 + 9784

Ex Output:
-6163


Ex Input:
7099 + 7754 - 6005 + 852 - 2187 + 4606 - 6703

Ex Output:
8782


Ex Input:
5536 - 8964 + 9507 + 6973 - 6717 - 8971 + 6307

Ex Output:

7401