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: 4470 @ 7285 # 4583 @ 9451 # 3236 # 3108 # 2875
Example Output: 7404

Example Input: 2996 @ 6178 @ 7214 # 172 # 3711
Example Output: 12505

Example Input: 2939 # 3767 # 5026 @ 2172 @ 7443 @ 72 @ 3980 # 9654 # 6958
Example Output:
-8799