摘要：
Time limit: 30.000 seconds限时30.000秒Problem问题A triangle is a basic shape of planar geometry. It consists of three straight lines and three angles in between. Figure 1 shows how the sides and angles are usually labeled. Figure: TriangleA look into a book about geometry shows that many formulas for tri 阅读全文
posted @ 2013-08-26 18:08
Devymex
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