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: 3007 @ 8777 # 8750

Output: 3034


Input: Consider Input: 120 # 2644 @ 4589

Output: 2065


Input: Consider Input: 288 @ 5971 # 5644 @ 9984 # 9043 # 8794 # 4481 @ 4508


Output: -7211