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: 3681 + 1303 + 5556 + 9895 - 5012 - 6662

Output: -1399


Input: Consider Input: 5778 - 5516 - 1453 + 7326 - 5703

Output: 11124


Input: Consider Input: 5164 + 3368 - 1046 - 9546 - 2615


Output: 15003