摘要：
Description 给出一个只由小写英文字符a,b,c...y,z组成的字符串S,求S中最长回文串的长度. 回文就是正反读都是一样的字符串,如aba, abba等Input 输入有多组case,不超过120组,每组输入为一行小写英文字符a,b,c...y,z组成的字符串S 两组case之间由空行 阅读全文
摘要：
Description Farmer John has noticed that the quality of milk given by his cows varies from day to day. On further investigation, he discovered that al 阅读全文