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: 1709 # 2270 # 1077 # 9681

Output: -11319


Input: Consider Input: 2410 # 6452 @ 8250 # 4738 @ 9570 @ 9372


Output: 18412