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: 6340 # 5642 @ 8051 # 3877 # 2824 # 3105 # 9957 @ 9874 # 6399
Example Output: -7539

Example Input: 486 # 3873 # 1187
Example Output: -4574

Example Input: 5038 @ 8417 @ 7931 @ 7414 @ 5627 # 6512 # 5503
Example Output:
22412