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: 5986 + 9293 + 3288 - 1791 + 6613 + 8185 - 7053
Example Output: -12549

Example Input: 1471 + 6113 + 3177 - 2507 - 2358 + 6654
Example Output: -9608

Example Input: 137 + 1053 + 5608 + 9863 - 1392 - 8754 + 246 - 6705
Example Output:
218