摘要:
Smith NumbersTime Limit: 1 Second Memory Limit: 32768 KB While skimming his phone directory in 1982, Albert Wilansky, a mathematician of Lehigh University, noticed that the telephone number of his br... 阅读全文
posted @ 2010-07-25 07:55 还好 阅读(543) 评论(0) 推荐(1) 编辑