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: 86 - 2166 - 8519 - 7184 - 362 - 2203 + 1579 - 1133 + 3978

Output: 16096


Input: Consider Input: 799 + 9104 - 2060 - 779 + 5546 - 9608 + 4006 + 8557 - 3643

Output: -10324


Input: Consider Input: 3080 + 8133 + 5605 + 7021


Output: -17679