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: 9808 + 7071 + 9458 - 8326 - 6406 - 6771 - 1321 + 4712

Output: 11391


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

Output: 20291


Input: Consider Input: 5606 - 9775 + 6581 + 287 + 2936 - 8113 - 7688


Output: 21378