。。。

摘要： ~~~~连续三道水题，也只能用提高手速这样理由来安慰自己了，不过，从d题数组超限自己改为边存边合并的方法看来还是有收获吧，只能这样强行“收获了”（泪目） 某省调查城镇交通状况，得到现有城镇道路统计表，表中列出了每条道路直接连通的城镇。省政府“畅通工程”的目标是使全省任何两个城镇间都可以实现交通（但不 阅读全文

摘要： Today is Ignatius' birthday. He invites a lot of friends. Now it's dinner time. Ignatius wants to know how many tables he needs at least. You have to 阅读全文

摘要： The Windy's Description The Windy's is a world famous toy factory that owns M top-class workshop to make toys. This year the manager receives N orders 阅读全文

摘要： Young naturalist Bill studies ants in school. His ants feed on plant-louses that live on apple trees. Each ant colony needs its own apple tree to feed 阅读全文