During the War of Resistance Against Japan, tunnel warfare was carried out extensively in the vast areas of north China Plain. Generally speaking, villages connected by tunnels lay in a line. Except the two at the ends, every village was directly con…
Simpsons' Hidden Talents Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 4597 Accepted Submission(s): 1671 Problem Description Homer: Marge, I just figured out a way to discover some of the…
Do you know what is called ``Coprime Sequence''? That is a sequence consists of nnpositive integers, and the GCD (Greatest Common Divisor) of them is equal to 1. ``Coprime Sequence'' is easy to find because of its restriction. But we can try to maxim…
问题 B: FIX 时间限制: 1 Sec 内存限制: 64 MB提交: 38 解决: 11[提交][状态][讨论版] 题目描述 如果单词 X 由单词 Y 的前若干个字母构成,我们称 X 是 Y 的前缀,例如“c”.“ca”.“cat”是单词“cat”的前缀:类似地如果单词 X 由单词 Y 的最后若干个字母构成,我们称 X 是 Y的后缀,例如“t”.“at”.“cat”是单词“cat”的后缀.请你编一程序判断一组单词是否满足任一单词都不是其它单词的前缀且任一单词都不是其它单词的后缀. 输入…