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: 4616 @ 2249 # 272 @ 618 # 4242 @ 6599 @ 8683 @ 1628 # 7090

Output: 12789


Input: Consider Input: 8932 # 2337 @ 825 # 8463 @ 528

Output: -515


Input: Consider Input: 3065 # 9776 @ 6985 # 6328 # 6711 @ 137 @ 4666


Output: -7962