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: 2167 - 8760 - 4771 - 8633 + 7929 + 9784 + 6892

Output: -274


Input: Consider Input: 5799 + 5384 + 4924 + 5003 + 983 + 2274 - 5524

Output: -7245


Input: Consider Input: 8127 - 1181 - 3831 + 4149


Output: 8990