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: 2078 + 3891 + 2060

Output: -3873


Input: Consider Input: 5127 + 1503 + 9610 + 3348

Output: -9334


Input: Consider Input: 4341 - 6153 + 9122 - 8893 - 5720 + 9158 + 9457 - 4130


Output: 1500