In this task you will be given an arithmetic operation and you have to find its answer. The operators '+' and '-' have been replaced with new symbols. Specifically, '+' has been replaced with the symbol '@' and '-' with the symbol '#'. You need to perform the operations in the given equation return the answer

Input: Consider Input: 8771 @ 2575 # 7914 # 3691

Output: -259

Input: Consider Input: 735 @ 7682 # 2492 # 7149 @ 7531 @ 4967 @ 3646 @ 6439

Output: 21359

Input: Consider Input: 5989 @ 460 @ 1448 # 8968 @ 4991 # 2069 # 3957 # 2989 @ 5365
Output: 270