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老是WA啊!这些输出不对吗?

Posted by dongshanluo at 2006-08-18 20:22:42 on Problem 1329
7.0 -5.0 -1.0 1.0 0.0 -6.0
(x - 3.000)^2 + (y + 2.000)^2 = 5.000^2
x^2 + y^2 - 6.000x + 4.000y - 12.000 = 0

1.0 7.0 8.0 6.0 7.0 -2.0
(x - 3.921)^2 + (y - 2.447)^2 = 5.409^2
x^2 + y^2 - 7.842x - 4.895y - 7.895 = 0

1 -1 0 0 -1 -1
x^2 + (y + 1.000)^2 = 1.000^2
x^2 + y^2 + 2.000y = 0

1 -1 1 1 -1 1
x^2 + y^2 = 1.414^2
x^2 + y^2 - 2.000 = 0

-1 1 0 0 -1 -1
(x + 1.000)^2 + y^2 = 1.000^2
x^2 + y^2 + 2.000x = 0

-1 1 0 0 -1 -1
(x + 1.000)^2 + y^2 = 1.000^2
x^2 + y^2 + 2.000x = 0

-1 1 -1 -1 0 0
(x + 1.000)^2 + y^2 = 1.000^2
x^2 + y^2 + 2.000x = 0

那些系数为0的要输出吗?

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