摘要：
1041:John's trip查看提交统计提问时间限制:1000ms内存限制:65536kB描述Little Johnny has got a new car. He decided to drive around the town to visit his friends. Johnny wanted to visit all his friends, but there was many of them. In each street he had one friend. He started thinking how to make his trip as short as p 阅读全文
