WN_795的博客

题目描述You are given a string S consisting of lowercase English letters. Find the lexicographically (alphabetically) smallest lowercase English letter that does not occur in S. If every lowercase Engli...

题目描述It's a hot summer day out on the farm, and Farmer John is serving lemonade to his N cows! All N cows (conveniently numbered 1…N) like lemonade, but some of them like it more than others. In part...

题目描述C 市火车站最近出现了一种新式自动售票机。买票时，乘客要先在售票机上 输入终点名称。一共有 N 处目的地，随着乘客按顺序输入终点名称的每个字母， 候选终点站数目会逐渐减少。在自动售票机屏幕上，有一个 4 行 8 列的键盘，如下图所示。在乘客每输入一个字母后，键盘上只有有效字符是可选的（取决于还有哪些 候选终点站），其余的字母会被字符 ’*’  取代。告诉你 N 处目的地的名...

链接：https://www.nowcoder.com/acm/contest/143/G来源：牛客网 时间限制：C/C++ 1秒，其他语言2秒空间限制：C/C++ 262144K，其他语言524288K64bit IO Format: %lld题目描述Give two positive integer c, n. You need to find a pair of inte...

链接：https://www.nowcoder.com/acm/contest/143/J来源：牛客网 时间限制：C/C++ 1秒，其他语言2秒空间限制：C/C++ 262144K，其他语言524288K64bit IO Format: %lld题目描述There are n students going to travel. And hotel has two types r...