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: 7388 - 3073 - 1891 + 2180 + 1361 - 9381 + 566 - 2665

Output: 20291


Input: Consider Input: 1808 - 5352 - 8697 + 5058 + 8777 + 8089 - 9688 + 9784

Output: -6163


Input: Consider Input: 4455 - 1169 - 670 - 8923 - 2708 - 4500 + 5595 + 7045 + 1718


Output: 8067