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: 6844 + 1340 - 4174 - 5664 + 4911 - 5241

Output: 15672


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

Output: 20291


Input: Consider Input: 7816 - 5835 - 4497


Output: 18148