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: 9273 # 8850 @ 3050

Output: 3473


Input: Consider Input: 4449 @ 4019 @ 7637

Output: 16105


Input: Consider Input: 1327 # 8507 # 2547 @ 715


Output: -9012