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: 7320 + 9337 - 31 + 8850 + 4804 + 230 - 9287 - 4572

Output: -2011


Input: Consider Input: 5161 + 8791 + 9352 + 7272 + 935 + 8632 + 1201

Output: -31022


Input: Consider Input: 3516 + 8386 + 2360 + 5291 - 7056 + 4771


Output: -10236