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: 7178 # 2086 # 1606 @ 4624 @ 4559 # 4855

Output: 7814


Input: Consider Input: 4809 # 9135 # 3011 # 4393 # 1039 # 3878 @ 1559 # 3798

Output: -18886


Input: Consider Input: 9380 # 5155 # 480 # 6791 # 9548 @ 2674 # 821 @ 657


Output: -10084