递推字符串
A1141 PAT Ranking of Institutions (25 point(s))
学校名称转小写,统计学号相同者的个数和总分
A1142 Maximal Clique (25 point(s))
强连通子图
A1143 Lowest Common Ancestor (30 point(s))
二叉查找树的共同祖先
A1144 The Missing Number (20 point(s))
寻找数组中缺少的第一个连续正整数--Set
A1145 Hashing - Average Search Time (25 point(s))
散列-再散列 查找失败平均长度
A1146 Topological Order (25 point(s))
拓扑排序
A1147 Heaps (30 point(s))
大小根堆判断+后序遍历
A1148 Werewolf - Simple Version (20 point(s))
狼人杀简单版
A1149 Dangerous Goods Packaging (25 point(s))
危险品装箱--map充当散列,记录数据出现次数
vectorv[maxn]充当键值对