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: 2367 + 2751 + 138 + 6347 + 5297

Output: -12166


Input: Consider Input: 9982 + 267 - 3418 + 8741 - 63 - 1771 + 4720

Output: 1506


Input: Consider Input: 4870 - 1471 - 7762 + 8556 + 659


Output: 4888