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: 2787 @ 3800 # 142 # 7750 # 8581 @ 5447 @ 1512 @ 6550
Example Output: 3623

Example Input: 4515 # 59 @ 9492
Example Output:
13948