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: 6960 # 4418 @ 5450 @ 8475

Output: 16467

Input: Consider Input: 9924 @ 6266 # 7022 # 7976 # 2541 @ 5396

Output: 4047

Input: Consider Input: 8384 # 7732 # 1316 @ 4165 # 3122 # 3131 @ 2466 # 825
Output: -1111