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: 7686 @ 8753 @ 1402 # 3760 # 9121 @ 5705 @ 9002

Output: 19667


Input: Consider Input: 5406 @ 9263 @ 7443 @ 6591 # 7496 @ 2721 # 7867

Output: 16061


Input: Consider Input: 9816 # 7643 # 7599 @ 1665 @ 7328 # 9066


Output: -5499