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: 5571 @ 5729 # 6405 # 526 # 1330

Output: 3039


Input: Consider Input: 6015 # 4758 @ 9332 @ 3048 @ 2544 # 1136 # 4093 @ 2060 @ 570

Output: 13582


Input: Consider Input: 7863 @ 6743 @ 3884 # 7705


Output: 10785