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: 2989 # 6833 # 4298 @ 8863 # 8408

Output: -7687


Input: Consider Input: 730 @ 7585 # 9902 # 6809 @ 286 @ 9412 @ 9282 # 3941 # 4046

Output: 2597


Input: Consider Input: 3985 # 1206 # 5323 @ 4328 @ 1937 @ 5532 @ 201 @ 2142


Output: 11596