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.

Input: Consider Input: 4624 + 1072 + 9261 + 232 - 7837

Output: 1896


Input: Consider Input: 395 - 3060 - 445 + 3450 + 3365

Output: -2915


Input: Consider Input: 3522 + 8651 + 5172 - 4816 - 7424 - 1074 - 1822 - 1419


Output: 6254