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: 2759 - 7972 - 7615 + 151
Example Output: 18195

Example Input: 1737 + 1422 + 9162 - 7244 + 6133
Example Output: -7736

Example Input: 2030 - 4671 - 6277 + 7403 + 211 + 1842 - 9247
Example Output:
12769