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: 415 @ 1312 # 9916 @ 9168 @ 1911
Example Output: 2890

Example Input: 1731 # 9932 # 4056 # 2303
Example Output: -14560

Example Input: 328 @ 7430 @ 5009 @ 4609 # 1933
Example Output:
15443