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: 7376 @ 9212 @ 1713 # 9993
Example Output: 8308

Example Input: 610 # 7967 # 8700 # 5966 @ 4310 @ 9963 # 8525
Example Output: -16275

Example Input: 6490 @ 4620 @ 8708
Example Output:
19818

