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: 1278 + 4628 + 2357 + 3694 + 5775 + 8542 - 793
Example Output: -22925

Example Input: 9489 - 1093 - 1183
Example Output: 11765

Example Input: 932 - 7028 + 5402 - 9015 + 2110
Example Output:
9463