Problem DescriptionIn 2100, since the sea level rise, most of the cities disappear. Though some survived cities are still connected with others, but most of them become disconnected. The government

<br />网址：http://acm.hdu.edu.cn/showproblem.php?pid=1272小希的迷宫<br />Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)<br />Total Submission(s): 4659    Accepted Submission(s): 1333<br /><br />Problem Description上次Gardon的迷宫城堡