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: 9487 # 9520 @ 4047

Output: 4014


Input: Consider Input: 3275 # 8948 # 7571 @ 9566 @ 9874 @ 3226

Output: 9422


Input: Consider Input: 9004 @ 9151 # 5283


Output: 12872


