most odd numbers red,most even numbers white,if we get n1 >n2 and n1-n2=m!,let n2 being black.That's all.
It is from t!-u!=w! no solution.
most odd numbers red,most even numbers white,if we get n1 >n2 and n1-n2=m!,let n2 being black.That's all.
It is from t!-u!=w! no solution.
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