抓水母的派大星

摘要： Given two strings a and b we define a*b to be their concatenation. For example, if a = "abc" and b = "def" then a*b = "abcdef". If we think of concate 阅读全文

摘要： lo0:loopback回环地址一般是127.0.0.0，loopback指本地环回接口（或地址），亦称回送地址()。此类接口是应用最为广泛的一种虚接口，几乎在每台路由器上都会使用。 gif0: software Network Interface 软件网络接口 stf0:6to4 tunnel i 阅读全文

摘要： 样例 样例输入 4 add Inside C# find Effective Java add Effective Java find Effective Java 样例输出 no yes 数据范围与提示 n<=30000 1 #include<stdio.h> 2 #include<algorit 阅读全文

摘要： The football season has just ended in Berland. According to the rules of Berland football, each match is played between two teams. The result of each 阅读全文

摘要： The string t1t2…tkt1t2…tk is good if each letter of this string belongs to at least one palindrome of length greater than 1. A palindrome is a string 阅读全文

摘要： You are playing a variation of game 2048. Initially you have a multiset ss of nn integers. Every integer in this multiset is a power of two. You may p 阅读全文

摘要： 求回文串的个数，中心扩展法，占用内存比马拉车小一点点，但代码较马拉车而言简单易懂。 阅读全文

摘要： Monocarp has got two strings ss and tt having equal length. Both strings consist of lowercase Latin letters "a" and "b". Monocarp wants to make these 阅读全文

摘要： 参考公众号：https://mp.weixin.qq.com/s?src=11&timestamp=1576558053&ver=2039&signature=mN7nJghjPUfRJJ16i67HUNkjeTL5gz3ietls7XFab6PuX*ZA2Em-YMBe4s7CZkVxWjbHRI 阅读全文

摘要： double定义的变量输入的时候一定要%lf输入，要是%f输入的话，得到的结果会是0 float输入的时候是%f 但是在输出的时候%lf和%f都可以输出 建议使用double类型时，用%lf输入，%f输出避免出错。 阅读全文