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: 1656 - 2355 + 4098 + 8586 + 7634 + 9427 + 9429
Example Output: -35163

Example Input: 8610 - 1799 + 6949 - 2118 + 2200 + 7263 + 3601 - 9571 - 1914
Example Output: 3999

Example Input: 8986 - 7351 + 7607 - 8373
Example Output:
17103