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: 1365 # 3902 @ 5909

Output: 3372


Input: Consider Input: 8196 @ 7820 # 8484 # 7462 @ 8007 # 414

Output: 7663


Input: Consider Input: 6439 @ 7693 # 718 @ 9859 # 890 @ 30 # 1809


Output: 20604