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: 2980 - 6793 - 1879 + 5728 - 4199
Example Output: 10123

Example Input: 1471 - 7798 + 6514 + 8053 + 9926
Example Output: -15224

Example Input: 2047 + 4675 + 8246
Example Output:
-10874