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:
9489 - 1093 - 1183

Ex Output:
11765


Ex Input:
9625 - 1139 - 9303

Ex Output:
20067


Ex Input:
9489 + 9798 - 5667 + 3983 + 2492

Ex Output:

-1117