题目链接：
PKU:http://poj.org/problem?id=3652
ZJU:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=1933
HDU:http://acm.hdu.edu.cn/showproblem.php?pid=2721
Description
WhatNext Software creates sequence generators that they hope will produce fairly random sequences of 16-bit unsigned integers in the range 0