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: 3477 + 8970 + 2278 - 9906 - 106 - 208 - 1334
Example Output: 3783

Example Input: 2977 - 4470 - 76 + 164 + 8433 - 2054 - 4953
Example Output: 5933

Example Input: 5348 - 8674 + 889 - 1230 + 3009 - 4038
Example Output:
15392