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: 4284 # 8233 @ 2781 # 2769 # 5560 @ 635 # 1706 @ 1965 @ 6794

Output: -1809


Input: Consider Input: 3337 @ 9906 @ 9733 # 853 @ 5075 # 2064 @ 9450 # 3886

Output: 30698


Input: Consider Input: 3342 @ 8916 # 6909 # 3627 # 798 # 7899 @ 5331 @ 4259 # 8830


Output: -6215