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解答
Cの色で場合分けをして、それ以外の色のminを出力
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B(1ペナ)
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解答
三平方の定理が成り立つ時にYesを出力
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辺の傾きの積が-1の時が存在するかを確かめようとして、分母が0になる場合で跳ね返されました、盲点でした。

次回は最低2完、目標3完!

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