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: 8137 @ 5006 # 7743 @ 1478
Example Output: 6878

Example Input: 7152 @ 8957 # 8060 # 3668 # 8713 # 9420 # 3603
Example Output: -17355

Example Input: 1807 # 2440 @ 6444 # 5460 # 2641 @ 9336
Example Output:
7046