传送门 题目大意 按顺时针或逆时针顺序给出n个端点的平面坐标，它们组成一个形如下图的二维几何图形， 判断这个图形是右手形还是左手形。图形可以被旋转但不能被缩放。 思路 题设中提到图形的大小不会被改变，也就是说即使所给出的点不同，但他们之间的相对大小是绝对地，可以从这个关系入手。 可以看见，图示中最长边就是底边，它的长度……
来自分类：做题
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edisoncgh
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于「4年前」在「互换友链」中说:
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