排列组合 – WNJXYKのBlog
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排列组合
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2018 Multi-University Training Contest 1
HDU 6298 Maximum Multiple 因为$$x \mid n, y \mid n, z \mid n, x+y+z = n$$,所以我们可以知道$$1 = \frac…
   76   2018-07-24 点击阅读更多
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