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: 4148 + 9216 - 5756 - 5558 + 2801 - 7501 + 1939 + 3102 + 6894
Example Output: -989

Example Input: 2982 + 9912 - 1386 + 7183 + 259 - 2370
Example Output: -10616

Example Input: 9587 + 3195 + 3020
Example Output:
3372