摘要:
poj 1228 Grandpa's Estate 题意:原先有一个由钉子和绳子圈定的凸多边形,然后绳子和钉子有所丢失,判断剩余的钉子是否能够确定原先的凸多边形; 转化:满足的条件:剩余的钉子能够组成凸包,而且每个边上至少有三个钉子;至少剩余六个钉子,凸包至少有三个顶点; 算法:凸包构造,暴力判断每 阅读全文
摘要:
Scrambled Polygon Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 10841 Accepted: 5085 Description A closed polygon is a figure bounded by 阅读全文