半壶老酒

原题链接：http://poj.org/problem?id=2002 一：原题内容 Description A square is a 4-sided polygon whose sides have equal length and adjacent sides form 90-degree angles. It is also a polygon such that r

原题链接： http://acm.hdu.edu.cn/showproblem.php?pid=3833 一：原题内容 Problem Description Given a permutation P of 1 to N, YY wants to know whether there exists such three elements P[i1], P[i2], P[

原题链接： http://acm.hdu.edu.cn/showproblem.php?pid=4287 一：原题内容 Problem Description 　　We all use cell phone today. And we must be familiar with the intelligent English input method on the cel

原题链接： http://acm.hdu.edu.cn/showproblem.php?pid=1014 一：原题内容 Problem Description Computer simulations often require random numbers. One way to generate pseudo-random numbers is via a funct

原题链接： http://acm.hdu.edu.cn/showproblem.php?pid=1128 一：原题内容 Problem Description In 1949 the Indian mathematician D.R. Kaprekar discovered a class of numbers called self-numbers. For any p