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: 1162 @ 622 # 7209 @ 3448

Output: -1977


Input: Consider Input: 1559 # 9981 # 6881

Output: -15303


Input: Consider Input: 8038 # 8592 # 6757 # 5168 @ 7883 @ 2731 # 8051 @ 9621 @ 9676


Output: 9381