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: 452 - 5631 - 8307 - 1886 + 4631 + 1695 + 4411 - 769

Output: 6308


Input: Consider Input: 1943 + 6084 + 8719 + 2400 + 8595 - 7077 + 1264

Output: -18042


Input: Consider Input: 5118 - 7009 - 6898 + 3980 - 3699 + 9961 + 476 - 6317 - 9125


Output: 23749