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: 5444 + 2542 - 6861 + 2740 - 4508 + 478 - 1138 + 7229
Example Output: 4962

Example Input: 4810 - 7988 + 5646 + 8226 + 5009 - 1013 + 7246 - 4319 - 1934
Example Output: -6063

Example Input: 7138 + 1059 + 2476 + 1334 - 9372 - 3440 + 1803 + 709
Example Output:
12569