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: 1971 - 5591 + 4038 + 5571

Output: -2047


Input: Consider Input: 9504 - 5838 + 6008 + 5759 + 2689


Output: 886