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: 8711 + 5319 - 3967 - 9285 + 2276

Output: 14368


Input: Consider Input: 4224 - 9761 - 8262 + 6568 - 5026 + 916 - 5225 - 2454 - 1897

Output: 29365


Input: Consider Input: 2823 - 718 - 8123 + 3791


Output: 7873