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: 877 # 7761 # 7154 # 4993 # 2712

Output: -21743


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

Output: -18219


Input: Consider Input: 2448 @ 5284 # 6313 @ 7761 @ 4601 @ 6800


Output: 20581