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: 8782 @ 1837 # 6954

Output: 3665


Input: Consider Input: 8129 # 5764 @ 7961 # 2052 @ 6379

Output: 14653


Input: Consider Input: 3428 # 7393 @ 5754 @ 5539


Output: 7328


