-- bird --

小希的迷宫<br />Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)<br />Total Submission(s): 4782    Accepted Submission(s): 1368<br /><br />Problem Description上次Gardon的迷宫城堡小希玩了很久（见Problem B），现在她也想设计一个迷宫让Gardon来走。但是她设计迷宫的思路不一样，首

More is better<br />Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 327680/102400 K (Java/Others)<br />Total Submission(s): 1576    Accepted Submission(s): 590<br /><br />Problem DescriptionMr Wang wants some boys to help him with a project. Becaus

畅通工程<br />Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)<br />Total Submission(s): 8386    Accepted Submission(s): 4181<br /><br />Problem Description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