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: 3839 # 8343 # 3366 @ 9432 @ 4687 @ 2441 # 89

Output: 8601


Input: Consider Input: 4844 # 7776 # 6204 # 1027 # 4447 # 7998 # 6045 @ 8611 @ 2765

Output: -17277


Input: Consider Input: 1774 @ 2012 @ 7798 @ 3914 @ 7612


Output: 23110