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: 8079 @ 5498 @ 5803 @ 711 # 9604 @ 7533

Output: 18020


Input: Consider Input: 3275 # 8948 # 7571 @ 9566 @ 9874 @ 3226

Output: 9422


Input: Consider Input: 9489 @ 9798 # 5667 @ 3983 @ 2492


Output: 20095


