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: 5604 # 514 # 150 @ 4349 @ 958 # 6247 # 8710

Output: -4710


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

Output: 15615


Input: Consider Input: 7928 # 1764 # 4499 @ 2194


Output: 3859