Problem B: Fire!
Joe works in a maze. Unfortunately, portions of the maze have caught on fire, and the owner of the maze neglected to create a fire escape plan. Help Joe escape the maze.
Given Joe's l...
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【HDU】
1213 How Many Tables 基础并查集★
1272 小希的迷宫 基础并查集★
1325&&poj1308 Is It ...