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: 2653 @ 9718 # 3237 @ 2973 # 6895 # 18
Example Output: 5194

Example Input: 3839 # 8343 # 3366 @ 9432 @ 4687 @ 2441 # 89
Example Output: 8601

Example Input: 9342 # 1309 @ 9267
Example Output:
17300