摘要：
题目链接： http://poj.org/problem?id=1207 Description Problems in Computer Science are often classified as belonging to a certain class of problems (e.g., 阅读全文
摘要：
题目链接： http://poj.org/problem?id=2365 Description Plotters have barberically hammered N nails into an innocent plane shape, so that one can see now onl 阅读全文