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: 4039 # 2314 # 8257 # 5828 @ 2387 @ 4250 @ 5479 # 991
Example Output: -1235

Example Input: 1365 # 3902 @ 5909
Example Output: 3372

Example Input: 7720 @ 5171 # 6139 @ 480
Example Output:
7232