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Problem C: 分类枚举 练2
Problem C: 分类枚举 练2
[Creator :
]
Time Limit :
1.000
sec
Memory Limit :
128 MiB
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ProblemList
Solved: 7
Submit Num: 14
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Description
把5支同样的铅笔全部放进3个同样的铅笔盒里,允许有的铅笔盒空着。共有多少种不同的放法?