Description

In a singing competition, 6 judges score a contestant. The average score from all 6 judges is 9.6. If the highest score is removed, the average becomes 9.4. If the lowest score is removed, the average becomes 9.8. What is the average score if both the highest and lowest scores are removed?

Input Format

No input is required.

Output Format

Output the result as a real number using the format %5.2f, rounded to 2 decimal places.

Sample

无

无