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: 6060 @ 2846 @ 4249 @ 6831 @ 5191 @ 3711 # 352 # 2921 @ 5640

Output: 31255


Input: Consider Input: 4428 # 2569 @ 338 # 967 @ 2206

Output: 3436


Input: Consider Input: 7491 # 1427 @ 9295 # 6367


Output: 8992