1645: [Usaco2007 Open]City Horizon 城市地平线 Time Limit: 5 Sec Memory Limit: 64 MBSubmit: 315 Solved: 157[Submit][Status] Description Farmer John has taken his cows on a trip to the city! As the sun sets, the cows gaze at the city horizon and observe t…
BZOJ_1654_[Usaco2007 Open]City Horizon 城市地平线_扫描线 Description N个矩形块,交求面积并. Input * Line 1: A single integer: N * Lines 2..N+1: Input line i+1 describes building i with three space-separated integers: A_i, B_i, and H_i Output * Line 1: The total area,…
[BZOJ1645][Usaco2007 Open]City Horizon 城市地平线 Description Farmer John has taken his cows on a trip to the city! As the sun sets, the cows gaze at the city horizon and observe the beautiful silhouettes formed by the rectangular buildings. The entire ho…
Description 约翰带着奶牛去都市观光.在落日的余晖里,他们看到了一幢接一幢的摩天高楼的轮廓在地平线 上形成美丽的图案.以地平线为 X 轴,每幢高楼的轮廓是一个位于地平线上的矩形,彼此间可能有 重叠的部分.奶牛一共看到了 N 幢高楼,第 i 幢楼的高度是 Hi,两条边界轮廓在地平线上的坐标是 Ai 到 Bi.请帮助奶牛们计算一下,所有摩天高楼的轮廓覆盖的总面积是多少. Input 第一行一个整数N,然后有N行,每行三个正整数ai.bi.Hi. Output 一个数,数列中所有元素的和.…