摘要：
/*==========================*\ | 计算几何基础函数 | | 1.点和向量的定义 | | 2.向量的基本运算 | | 3.点积 | | 4.向量长度 | | ... 阅读全文
摘要：
Space AntTime Limit:1000MSMemory Limit:10000KTotal Submissions:2876Accepted:1839DescriptionThe most exciting space discovery occurred at the end of the 20th century. In 1999, scientists traced down an ant-like creature in the planet Y1999 and called it M11. It has only one eye on the left side of it 阅读全文