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: 9466 # 395 @ 5036 # 8315 @ 1723

Output: 7515


Input: Consider Input: 486 # 3873 # 1187

Output: -4574


Input: Consider Input: 242 # 8476 # 5011 # 8468


Output: -21713