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: 9467 + 7102 - 1964
Example Output: 4329

Example Input: 2167 - 8760 - 4771 - 8633 + 7929 + 9784 + 6892
Example Output: -274

Example Input: 4405 - 8294 - 3919 + 3114 - 9307 + 7626 + 6128 + 2451
Example Output:
6606