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: 6492 - 3901 + 3666 + 9196 - 3917 - 133

Output: 1581


Input: Consider Input: 5088 - 9353 - 2772 + 3908 + 9196 + 4709

Output: -600


Input: Consider Input: 6447 - 8359 - 9364 - 3868 + 4095 + 1870 - 3698 + 2381


Output: 23390