该博客介绍了HDOJ 1297题——Children’s Queue，要求男孩和女孩排队，女孩至少成对出现。博主通过分析得出递归公式F(n) = F(n-1) + F(n-2) + F(n-4)，讨论了合法队列的构造方法，涉及大数处理和递推关系的理解。
HDOJ题目地址：传送门
Children’s Queue
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 13677 Accepted Submission(s): 4479
Problem Description
There are many students in PHT School. One day, the headmaster whose name is PigHeader wanted all students stand in a line. He prescribed that girl can not be in single. In other words, either no girl in the queue or mor
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