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: 3112 - 4832 - 7889 - 6855 - 5294 - 5908 + 9757 - 9064

Output: 33197


Input: Consider Input: 7961 - 5474 + 4234 - 4358 - 7627 - 2291 - 9771 + 9867 - 813

Output: 24194


Input: Consider Input: 7074 + 737 - 2991 - 4474 + 5894


Output: 7908