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: 2342 + 4498 - 5816 + 2604 - 6155 - 2683 - 1893 - 2482

Output: 14269


Input: Consider Input: 2167 - 8760 - 4771 - 8633 + 7929 + 9784 + 6892

Output: -274


Input: Consider Input: 8375 - 3559 - 5078


Output: 17012