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: 523 # 5860 # 778

Output: -6115


Input: Consider Input: 8157 # 6333 @ 7928

Output: 9752


Input: Consider Input: 5318 # 9230 @ 467


Output: -3445