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: 7298 + 5069 + 5167 + 9387 - 6886

Output: -5439


Input: Consider Input: 2980 - 6793 - 1879 + 5728 - 4199

Output: 10123


Input: Consider Input: 2386 + 6263 + 1164 + 7314


Output: -12355