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: 2724 @ 8119 @ 1049 @ 9004
Example Output: 20896

Example Input: 6628 @ 7709 @ 528 @ 8813
Example Output: 23678

Example Input: 8407 # 5204 @ 8451 # 6859 @ 8049 @ 3155
Example Output:
15999