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: 1614 @ 5794 # 2578

Output: 4830


Input: Consider Input: 2030 # 4671 # 6277 @ 7403 @ 211 @ 1842 # 9247

Output: -8709


Input: Consider Input: 6536 # 934 @ 2234 @ 798 # 8891 @ 1378 @ 3988


Output: 5109