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: 4558 @ 6469 @ 1154

Output: 12181


Input: Consider Input: 6729 # 6577 # 4789 # 6061 # 1189 # 2628 # 6930 @ 3226

Output: -18219


Input: Consider Input: 4785 @ 6373 # 9072 # 2260 @ 4647 @ 968 # 7971


Output: -2530