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: 958 # 263 # 1097 @ 3868 # 3982

Output: -516


Input: Consider Input: 3462 @ 9743 @ 8298

Output: 21503


Input: Consider Input: 6214 @ 5413 @ 8206 @ 698 @ 9439 # 9696 @ 2713 # 5395 # 8637


Output: 8955