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: 1471 + 6113 + 3177 - 2507 - 2358 + 6654

Output: -9608


Input: Consider Input: 9447 - 88 - 9606 - 2754

Output: 21895


Input: Consider Input: 1107 + 9957 + 3044 + 3999 - 9003 - 1965 - 2472 - 5067


Output: 2614