摘要： Here is a square matrix of n * nn∗n, each lattice has its value (nn must be odd), and the center value is ... 阅读全文

摘要： n Complexity theory, some functions are nearly O(1)O(1), but it is greater then O(1)O(1). For example, the... 阅读全文

摘要： In the modern time, Search engine came into the life of everybody like Google, Baidu, etc. Wiskey also wan... 阅读全文

摘要： The little cat is so famous, that many couples tramp over hill and dale to Byteland, and asked the little ... 阅读全文

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

摘要： For each prefix of a given string S with N characters (each character has an ASCII code between 97 and 126... 阅读全文

摘要： 给定两个数字序列 a[] 和 b[]，b[] 有可能整体作为一个连续子序列出现在了 a[] 中，现在请你找出 b[] 在 a[] 中第一次出现的位置（起始位置从 1 开始计数），如果一次都没有出现，请输出 -1。... 阅读全文

摘要： 小 A 是社团里的工具人，有一天他的朋友给了他一个 nn 个点，mm 条边的正权连通无向图，要他计算所有点两两之间的最短路。作为一个工具人，小 A 熟练掌握着 floyd 算法，设 w[i][j]w[i][j] ... 阅读全文

摘要： Problem DescriptionYou have a directed weighted graph with n vertexes and m edges. The value of a path is ... 阅读全文

摘要： 题目描述现在已经是暑假了！这周日，码队的弟弟所在的班级——上海某中学高二 33 班的同学们准备在码队弟弟的带领下（码队的弟弟是这个班的班长），举办一场派对。码队的弟弟让两名同学打开手机 「云闪付」app，在云闪付... 阅读全文