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

Output: 21359


Input: Consider Input: 7729 # 7280 @ 5072 @ 3806 # 6060

Output: 3267


Input: Consider Input: 752 # 9330 # 2772 # 6719 @ 6010 @ 6833 # 5355 @ 6260


Output: -4321