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: 4117 - 3380 - 4784

Output: 12281


Input: Consider Input: 7451 + 2964 + 1609 - 9543 - 679 + 381 - 9788 - 8125

Output: 30632


Input: Consider Input: 2405 - 6219 - 1177 + 5274 - 9698 - 6173 - 4272


Output: 24670