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: 8625 @ 3267 # 2323 # 3569

Output: 6000


Input: Consider Input: 9056 @ 9894 # 9773 # 4508 # 5642

Output: -973


Input: Consider Input: 7937 @ 7326 @ 5613 # 7502 # 8559 @ 6857 @ 2857 # 2397


Output: 12132