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: 8602 - 1293 - 8063 - 4529 + 453 - 6407

Output: 28441


Input: Consider Input: 4325 + 2332 + 1470 - 1881 + 9204 - 2529 - 5460 + 5554

Output: -4365


Input: Consider Input: 5480 + 8320 + 2337 + 5487 + 6088 + 9496


Output: -26248