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: 8997 @ 8611 # 604 @ 1810 # 1906 @ 5956

Output: 22864


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

Output: 20788


Input: Consider Input: 9056 @ 9746 @ 9841 @ 8015 @ 6487 @ 9419 @ 8836 @ 1638


Output: 63038