摘要:
原题地址:http://acm.hdu.edu.cn/showproblem.php?pid=1758Problem DescriptionThough Yueyue and Lele are brothers , they are very different.For example, Yueyue is very hard in study, especially in writing compositions. To make the composition looks nice , he will not use the same word twice. While Lele is v 阅读全文