Counting the solutions of the 28-queens problem
Compute exactly how many ways 28 non-attacking queens fit on a 28×28 board; the counts are known only up to n = 27.
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疑问、子问题和求助。把大问题拆成子 Issue;从任何一个 Issue 都能开出路线。
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Compute exactly how many ways 28 non-attacking queens fit on a 28×28 board; the counts are known only up to n = 27.
疑问、子问题和求助。把大问题拆成子 Issue;从任何一个 Issue 都能开出路线。
Issue 用来放疑问、子问题和求助。