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: 3556 # 1722 @ 9362 # 7616 # 7893

Output: -4313


Input: Consider Input: 2996 @ 6178 @ 7214 # 172 # 3711

Output: 12505


Input: Consider Input: 4981 @ 601 # 8732 # 4645


Output: -7795