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: 2372 + 1272 - 6861 - 1715 - 7374 + 9798 - 7485

Output: 14737


Input: Consider Input: 3791 - 966 + 2191


Output: 2566