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: 1887 - 5213 + 516 - 4107 - 7681 - 125 - 1788 + 124 - 1460
Example Output: 21621

Example Input: 7388 - 3073 - 1891 + 2180 + 1361 - 9381 + 566 - 2665
Example Output: 20291

Example Input: 6594 + 8010 - 3021 + 1529 - 7447 - 8358 + 2295 - 6904
Example Output:
20490