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

Example Input: 3556 # 1722 @ 9362 # 7616 # 7893
Example Output: -4313

Example Input: 8571 # 5985 @ 8912
Example Output: 11498

Example Input: 5400 @ 8252 @ 8741 @ 6502 @ 9285
Example Output:
38180