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: 8698 # 7378 # 9188 @ 5767 # 2935 # 2532 @ 7113
Example Output: -455

Example Input: 5235 @ 3917 @ 4902 @ 3831 # 6517
Example Output: 11368

Example Input: 4997 # 6364 # 2354 @ 8900 @ 4699 # 3901 # 5688
Example Output:
289