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: 8625 @ 3267 # 2323 # 3569

Output: 6000


Input: Consider Input: 7272 @ 8958 # 7231 @ 6616

Output: 15615


Input: Consider Input: 5161 @ 490 # 3563 @ 7034 @ 4888


Output: 14010