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: 4647 - 2106 + 6760 + 3296 - 9772
Example Output: 6469

Example Input: 3719 - 4138 - 7321 - 9097 + 4558 + 9667 + 1909 + 647 - 6132
Example Output: 13626

Example Input: 1947 - 2232 - 6391 + 9291 + 469 + 8929 - 8648 + 3400 + 8844
Example Output:
-11715