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: 3254 - 200 + 4450 - 6393 - 2480 + 4564 + 9650

Output: -6337


Input: Consider Input: 758 + 1664 + 5481 - 1654 - 1804 + 5232 - 9130

Output: 969


Input: Consider Input: 2390 - 9759 - 7247


Output: 19396