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: 9549 @ 21 # 6714 # 2406 # 2527 # 8527 @ 1769

Output: -8835


Input: Consider Input: 5986 # 3224 # 3957 @ 1893 @ 9453 @ 3954 # 476 # 5750 # 5163

Output: 2716


Input: Consider Input: 6732 # 6062 # 8330 @ 7788 # 730


Output: -602