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:
2537 - 3199 + 5925 + 8172 + 3564 + 8810

Ex Output:
-20735


Ex Input:
4339 + 9368 + 8791 - 3746 + 4555

Ex Output:

-14629