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6250: question0014
Memory Limit:128 MB
Time Limit:1.000 S
Judge Style:Text Compare
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Description
有两排座位,前排11个座位,后排12个座位,现安排2人就座规定前排中间的3个座位不能坐,并且这2人不左右相邻,那么不同排法的种数是多少?
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多排问题直排策略
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排列组合