Олимпиадный тренинг

Задача 38664. Bisector


Input
Six numbers – coordinates of points X, Y and Z.

Imprint
Three numbers – coefficients of the equation of the angle bisector YXZ.

Examples
# Input Output
1 0 0 1 0 0 1 1.000000 -1.000000 0.000000
2 0 0 1 3 1 -3 0.000000 -0.632456 0.000000