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: 2548 @ 2442 # 6943 # 1890 @ 3686 @ 9765 # 1273
Example Output: 8335

Example Input: 120 # 2644 @ 4589
Example Output: 2065

Example Input: 3626 @ 1784 # 6558 @ 801 @ 2127
Example Output:
1780