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: 4110 - 9440 + 557 + 7868 - 6315 + 2518 - 9049 + 3905 + 2052

Output: 12014


Input: Consider Input: 8802 - 6452 - 1721 - 4775 + 1838 + 4933 + 9964 - 6909

Output: 11924


Input: Consider Input: 7121 + 1172 - 2303 + 7626 - 6841 - 9838 - 1323 + 2783


Output: 15845