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: 2307 # 9363 @ 4926 @ 5635

Output: 3505


Input: Consider Input: 4970 @ 8711 @ 6188

Output: 19869


Input: Consider Input: 8625 @ 2916 # 3947


Output: 7594