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: 1616 - 440 + 11

Output: 2045


Input: Consider Input: 7744 - 1859 - 3667 + 1907 - 2807

Output: 14170


Input: Consider Input: 2340 + 1370 + 1494


Output: -524