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: 9781 # 2797 # 2134

Output: 4850


Input: Consider Input: 693 # 2562 @ 733 # 3913 @ 310

Output: -4739


Input: Consider Input: 5799 # 5804 # 1460 @ 9830 @ 1422 @ 2012 @ 8190 @ 6583


Output: 26572