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: 8398 - 1163 + 8396 + 4440 + 9289
Example Output: -12564

Example Input: 6051 + 6310 + 7813 + 2282 - 7601 + 4598 - 1928 - 9696 - 6497
Example Output: 10770

Example Input: 9168 + 3273 + 1129
Example Output:
4766