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

Input: Consider Input: 452 # 5631 # 8307 # 1886 @ 4631 @ 1695 @ 4411 # 769

Output: -5404


Input: Consider Input: 3363 @ 4009 @ 5612 # 7774 @ 1547 @ 531 @ 9025 @ 3155 # 3948

Output: 15520


Input: Consider Input: 2020 @ 862 # 5780


Output: -2898