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Given a natural number n, by n the beginning can have a half set in order set (n) the number is as follows. (1) n ∈ set (n) (2) in n left with a natural number, but the natural number can not exceed the number of recently added half (3) deal with this rule, should not be added until the natural numbers so far. For example, set (6) = (6,16,26,126,36,136). Set half of set (6) There are six elements.
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2-6半数集问题\半数集问题1.cpp
2-6半数集问题\半数集问题.doc
2-6半数集问题\2-6半数集问题