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: 3522 @ 8651 @ 5172 # 4816 # 7424 # 1074 # 1822 # 1419

Output: 790


Input: Consider Input: 9285 # 5492 @ 6629 # 5477 @ 5969 # 8754

Output: 2160


Input: Consider Input: 8899 # 4509 # 9411 # 7373


Output: -12394