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: 7347 # 9135 # 9303 @ 1078 # 3054 @ 4217 @ 4075

Output: -4775


Input: Consider Input: 9746 # 6804 @ 5800 @ 8118 @ 2515 @ 1083 # 8754

Output: 11704


Input: Consider Input: 1689 @ 6655 @ 1266 @ 3632 @ 7091


Output: 20333