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: 7757 # 4475 @ 6447 # 2209 # 9966

Output: -2446


Input: Consider Input: 6597 @ 1596 # 358 # 9057 @ 993

Output: -229


Input: Consider Input: 5674 @ 2951 # 4714 # 1311


Output: 2600