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: 1916 @ 5847 @ 4371

Output: 12134


Input: Consider Input: 9285 # 5492 @ 6629 # 5477 @ 5969 # 8754

Output: 2160


Input: Consider Input: 2288 @ 2890 # 2639 @ 5166


Output: 7705


