1 1 0.360000000000
2 2 0.720000000000
3 3 1.080000000000
6 5 1.160000000000
7 6 1.520000000000
471 303 1.560000000000
474 305 1.640000000000
511 329 1.960000000000
723 465 2.280000000000
900 576
