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: 1655 @ 6751 # 5432 @ 5817 @ 3005 # 1615

Output: 10181


Input: Consider Input: 6277 # 2029 # 4158 @ 5412 # 6845 # 6694 @ 5432

Output: -2605


Input: Consider Input: 1592 # 2894 # 9980 @ 4503 # 4006 # 8338 # 6314 @ 4860 @ 6836


Output: -13741