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: 6348 # 2614 @ 3559 @ 9670 # 1137 # 9684

Output: 6142


Input: Consider Input: 8586 # 9377 # 4055 # 4701


Output: -9547