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:
1589 + 4479 - 6111 - 3158 - 7662

Ex Output:
14041


Ex Input:
7298 + 5069 + 5167 + 9387 - 6886

Ex Output:
-5439


Ex Input:
5527 - 1448 - 8473 + 9368 + 6736 + 3360 + 8564 + 2705 + 6958

Ex Output:

-22243