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输入问题

Posted by chedan0615 at 2010-11-21 12:19:09 on Problem 1129
请问1129题的输入如何输入:
2
A:
B:
4
A:BC
B:ACD
C:ABD
D:BC
4
A:BCD
B:ACD
C:ABD
D:ABC
0

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