摘要：
https://vjudge.net/problem/UVA-11178 题意：三角形ABC的三等分线相交成等边三角形DEF 给出ABC坐标，输出DEF坐标 直线旋转求交点 阅读全文
摘要：
//Part 1 struct Point() { double x,y; Point(double x=0,double y=0):x(x),y(y) { } }; typedef Point Vector; Vector operator + (Vector A,Vector B) { retu 阅读全文
摘要：
DNA repair http://poj.org/problem?id=3691 Time Limit: 2000MS Memory Limit: 65536K Description Biologists finally invent techniques of repairing DNA th 阅读全文