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.

Input: Consider Input: 7163 + 3916 + 4926 + 2532 - 2743 - 5389 + 7290

Output: -3369


Input: Consider Input: 8671 + 9945 - 8465 - 5276 + 1447

Output: 11020


Input: Consider Input: 5204 + 455 - 8181 - 6921 + 6062 - 9220 - 6945


Output: 29954