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: 9273 # 8850 @ 3050

Output: 3473


Input: Consider Input: 4264 # 4438 @ 3871 @ 7585 # 540 # 3455 # 6016

Output: 1271


Input: Consider Input: 533 # 7702 # 1823


Output: -8992