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i have checked out the bug!.i didn't initiate the array of disclosed in the loop.

when 10004 done,i meet a strange question: when i try several input/output myself ,it do the right thing,but in the online-judge,receive WA,but i don't know why.would anybody help me ?thank you very much!
my idea is DFS,every expanded node's color is opposite to the father's(implemented by using ...