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: 931 # 9775 @ 8414
Example Output: -430

Example Input: 353 # 9525 @ 9923 @ 4025 # 1922 @ 4751
Example Output: 7605

Example Input: 5174 # 3266 @ 9301 # 4144 # 6103
Example Output:
962