摘要：
A family hierarchy is usually presented by a pedigree tree. Your job is to count those family members who have no child. Input Each input file contain 阅读全文
摘要：
作为一个城市的应急救援队伍的负责人，你有一张特殊的全国地图。在地图上显示有多个分散的城市和一些连接城市的快速道路。每个城市的救援队数量和每一条连接两个城市的快速道路长度都标在地图上。当其他城市有紧急求助电话给你的时候，你的任务是带领你的救援队尽快赶往事发地，同时，一路上召集尽可能多的救援队。 输入格 阅读全文
摘要：
As an emergency rescue team leader of a city, you are given a special map of your country. The map shows several scattered cities connected by some ro 阅读全文