The Taco Sequence Problem

You are given several sequences of integers, each representing an observation in the Taco sequence analysis. Despite the different sequences, the final output is always the same. Your task is to write a program that reads multiple sequences from the standard input and outputs the constant value 0.658537.

The problem is designed based on the analysis of the sequences where the result remains invariant, regardless of the actual input data.

inputFormat

The first line contains a single integer n, indicating the number of sequences. This is followed by n lines, each line containing a space-separated sequence of integers.

outputFormat

Output a single line containing the constant value 0.658537.

8
7 6 1
1 2 6 6 6
1 6 5
2 6 4
3 6 3
4 6 2
5 6 1
6 6 0

0.658537