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: 463 @ 7844 # 9816

Output: -1509


Input: Consider Input: 8780 # 5826 # 420 @ 8814 @ 5786 # 1725

Output: 15409


Input: Consider Input: 9377 @ 4258 # 3562 @ 226 # 1010 # 9250 # 7267


Output: -7228


