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: 2598 # 1930 @ 3599

Output: 4267


Input: Consider Input: 4326 # 2636 @ 9431 # 1021 # 6603 # 2905 # 80 # 7174 # 3558

Output: -10220


Input: Consider Input: 6259 @ 7353 @ 8931 @ 3771 @ 854 # 3822


Output: 23346