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: 5406 @ 9263 @ 7443 @ 6591 # 7496 @ 2721 # 7867

Output: 16061


Input: Consider Input: 2214 @ 2042 # 8931

Output: -4675


Input: Consider Input: 5609 @ 2364 @ 4750


Output: 12723