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: 1471 - 7798 + 6514 + 8053 + 9926

Output: -15224


Input: Consider Input: 4993 - 9334 - 5415 + 8531 - 5640 + 896 + 3114 - 1984

Output: 14825


Input: Consider Input: 7424 + 7252 - 579 - 2648 + 6396 - 9732 + 3538


Output: 3197