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: 3238 + 2914 + 4122
Example Output: -3798

Example Input: 6433 + 6891 + 2386 - 7923 - 2419 + 7641
Example Output: -143

Example Input: 311 + 8809 - 9456 + 5455 - 7763 - 2360 + 2335 - 3967
Example Output:
7258