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贡献一个有用的测试数据

Posted by ksmxb at 2015-08-04 21:56:29 on Problem 2153 
5
Li Ming
B
A
C
D
2
80 A
60 C
78 Li Ming
77 D
82 B
80 A
87 Li Ming
72 C
79 B
76 D

答案：
3
1
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