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: 6884 @ 145 # 2208 # 5356 # 3578 @ 606

Output: -3507


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

Output: 10181


Input: Consider Input: 4032 # 1366 @ 7509 @ 5803 @ 1506


Output: 17484