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: 6800 + 2564 + 8444 + 1912

Output: -6120


Input: Consider Input: 9085 + 2845 - 6159 + 1404 + 2110 - 8797

Output: 17682


Input: Consider Input: 1437 - 8252 + 9183 - 6167 + 5345 - 4527 + 9190 + 9830 + 8361


Output: -21526