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: 321 - 4450 - 5504 - 9901 - 295 - 7018 - 1113 - 5299 - 2387

Output: 36288


Input: Consider Input: 9990 - 8613 - 152 + 4529

Output: 14226


Input: Consider Input: 6704 - 285 - 2983 - 1126 + 648 - 9227 + 7871 + 4934


Output: 6872