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: 4272 + 6013 - 9409 - 6130 + 9575 + 2198

Output: 2025


Input: Consider Input: 4397 - 3478 - 9837 - 7164 + 7972 + 3676

Output: 13228


Input: Consider Input: 1335 - 4724 - 9411


Output: 15470