摘要：
题目链接： http://poj.org/problem?id=1039 题目描述： Pipe Description The GX Light Pipeline Company started to prepare bent pipes for the new transgalactic ligh 阅读全文
摘要：
题目链接： http://poj.org/problem?id=1673 题目描述： EXOCENTER OF A TRIANGLE Description Given a triangle ABC, the Extriangles of ABC are constructed as follows 阅读全文
摘要：
题目链接： http://poj.org/problem?id=1113 题目描述： Wall Description Once upon a time there was a greedy King who ordered his chief Architect to build a wall a 阅读全文