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: 1721 # 7193 # 7392 # 8999 # 7847 @ 5571 @ 4439 @ 7158 # 6030

Output: -18572


Input: Consider Input: 2404 @ 4359 # 5006 # 2796 # 6139

Output: -7178


Input: Consider Input: 1951 @ 9467 @ 4719 # 5963 @ 6369 # 7505 # 7105 # 2109 # 6047


Output: -6223