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.

Example Input: 4224 - 9761 - 8262 + 6568 - 5026 + 916 - 5225 - 2454 - 1897
Example Output: 29365

Example Input: 3915 + 4904 + 4887 + 7162 - 3798 + 233 + 1101 - 7758 - 4627
Example Output: 1811

Example Input: 2701 + 1957 + 4861
Example Output:
-4117