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: 4867 # 7162 @ 1616 # 596 # 7845 @ 9594 # 3650 @ 6833

Output: 3657


Input: Consider Input: 1365 # 3902 @ 5909

Output: 3372


Input: Consider Input: 9168 @ 3273 @ 1129


Output: 13570