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: 64 # 5994 @ 8659 # 885

Output: 1844


Input: Consider Input: 4449 @ 4019 @ 7637

Output: 16105


Input: Consider Input: 5747 # 3631 # 8250


Output: -6134