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: 9546 @ 5515 @ 6740 # 2069 # 921 # 9110 # 5067 # 3917 # 6434

Output: -5717


Input: Consider Input: 7021 # 2043 @ 7414 # 2632 @ 2939 @ 8718 @ 2731

Output: 24148


Input: Consider Input: 3961 @ 5136 # 8012 @ 9491 # 1198 # 2590 # 6467 @ 6935 @ 7157


Output: 14413