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: 7320 + 9337 - 31 + 8850 + 4804 + 230 - 9287 - 4572

Output: -2011


Input: Consider Input: 597 + 4303 + 4507 + 4779 - 8079

Output: -4913


Input: Consider Input: 3776 - 8250 + 3401 - 3766 - 6955


Output: 19346