摘要：
A substring of a string T is defined as: T( i, k)= TiTi +1... Ti+k -1, 1≤ i≤ i+k-1≤| T|. Given two strings A, B and one integer K, we define S, a set 阅读全文
摘要：
Once upon a time there was a famous actress. As you may expect, she played mostly Antique Comedies most of all. All the people loved her. But she was 阅读全文