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:
5709 + 8211 + 3945 + 1143 - 7258

Ex Output:
-332


Ex Input:
5127 + 1503 + 9610 + 3348

Ex Output:
-9334


Ex Input:
1439 + 4809 + 6755 - 4840 + 491 + 9049 + 8905 + 8915

Ex Output:

-32645