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: 4054 + 5873 - 3926 - 2524 + 5551 - 1721

Output: 801


Input: Consider Input: 1256 - 3248 - 3709 - 3019

Output: 11232


Input: Consider Input: 5869 + 6426 + 7188 + 3170 - 2765


Output: -8150