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: 4364 # 2781 # 7674 # 4801 @ 898 @ 7562 @ 5925 @ 648 @ 7768

Output: 11909


Input: Consider Input: 6039 @ 1273 # 2162 # 5061 @ 5087 @ 4703

Output: 9879


Input: Consider Input: 8711 # 2956 @ 2646 @ 2514 # 9287


Output: 1628