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: 4110 - 9440 + 557 + 7868 - 6315 + 2518 - 9049 + 3905 + 2052

Output: 12014


Input: Consider Input: 23 - 7991 - 1064 + 8364

Output: 714


Input: Consider Input: 8922 + 271 + 4045 + 2559 + 8759


Output: -6712