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: 452 # 5631 # 8307 # 1886 @ 4631 @ 1695 @ 4411 # 769
Example Output: -5404

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

Example Input: 9157 @ 9818 # 3341 @ 765 @ 8140 @ 1587
Example Output:
26126