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: 4565 @ 7065 # 5397

Output: 6233


Input: Consider Input: 7211 # 614 @ 1584 # 4857 # 1495 # 1821 # 2219

Output: -2211


Input: Consider Input: 4096 @ 9751 # 6185 @ 397 @ 3154 # 4065 # 4935


Output: 2213