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: 1462 + 1045 - 6631 - 4510 + 2234 + 4084 - 6610 + 2698

Output: 9152


Input: Consider Input: 306 + 2346 - 7752 + 7173

Output: -1461


Input: Consider Input: 8833 - 6864 - 2724 - 1706 + 8617 + 9386 - 7540


Output: 9664