摘要：
PAT甲级 1013 Battle Over Cities C++ It is vitally important to have all the cities connected by highways in a war. If a city is occupied by the enemy, a 阅读全文
摘要：
PAT甲级 1003 Emergency C++ As an emergency rescue team leader of a city, you are given a special map of your country. The map shows several scattered ci 阅读全文