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: 9909 - 1362 + 9804 + 5190 + 8223 - 3758

Output: -8188


Input: Consider Input: 3529 + 4269 - 4932 + 6851 - 3946


Output: 1287