1.000000
20
1 1 2 1.000000
2 2 3 1.000000
3 3 4 1.000000
4 4 5 1.000000
5 5 6 1.000000
6 6 7 1.000000
7 7 8 1.000000
8 8 9 1.000000
9 9 10 1.000000
10 10 11 1.000000
11 11 12 1.000000
12 12 13 1.000000
13 13 14 1.000000
14 14 15 1.000000
15 15 16 1.000000
16 16 17 1.000000
17 17 18 1.000000
18 18 19 1.000000
19 19 20 1.000000
20 20 21 1.000000
1 0.0000000E+00
2 5.0000001E-02
3 0.1000000
4 0.1500000
5 0.2000000
6 0.2500000
7 0.3000000
8 0.3500000
9 0.4000000
10 0.4500000
11 0.5000000
12 0.5500000
13 0.6000000
14 0.6500000
15 0.7000000
16 0.7500000
17 0.8000000
18 0.8500000
19 0.9000000
20 0.9500000
21 1.000000
1 1.000000
1 1.000000