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: 4364 # 2781 # 7674 # 4801 @ 898 @ 7562 @ 5925 @ 648 @ 7768

Output: 11909


Input: Consider Input: 9889 @ 8457 # 4692

Output: 13654


Input: Consider Input: 7265 @ 7523 # 2966 # 9833 # 4458 # 3941


Output: -6410