6
1.0   1.0
2.0   1.0
3.0   2.0
4.0   6.0
5.0   24.0
6.0   120.0
7.0   720.0
10  
1.0   1.5   2.5   3.5   4.0   
4.5   5.5   6.0   6.5   7.0

