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: 9074 # 3474 @ 2553 @ 8125 # 7981 # 1438 @ 9668

Output: 16527


Input: Consider Input: 1949 @ 526 @ 1777 @ 8065 @ 2790 # 1800 # 486 @ 229 @ 7738

Output: 20788


Input: Consider Input: 3158 @ 3307 # 9213 # 6992 # 8621 # 5123 # 32


Output: -23516