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: 6860 @ 2810 # 1038

Output: 8632


Input: Consider Input: 4284 # 8233 @ 2781 # 2769 # 5560 @ 635 # 1706 @ 1965 @ 6794

Output: -1809


Input: Consider Input: 5292 @ 3623 @ 7450


Output: 16365