2022-01-21 01:00:18 +05:30
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---
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id: 5900f4da1000cf542c50ffec
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2022-01-22 20:38:20 +05:30
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title: '問題 365: 巨大な二項係数'
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2022-01-21 01:00:18 +05:30
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challengeType: 5
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forumTopicId: 302026
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dashedName: problem-365-a-huge-binomial-coefficient
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---
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# --description--
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2022-01-22 20:38:20 +05:30
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二項係数 $\displaystyle\binom{{10}^{18}}{{10}^9}$ は 90 億 ($9 × {10}^9$) 桁を超える数です。
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2022-01-21 01:00:18 +05:30
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2022-01-22 20:38:20 +05:30
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$M(n, k, m)$ を、二項係数 $\displaystyle\binom{n}{k}$ mod $m$ とします。
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2022-01-21 01:00:18 +05:30
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2022-01-22 20:38:20 +05:30
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素数 $p$, $q$, $r$ が $1000 < p < q < r < 5000$ を満たすとき、$\sum M({10}^{18}, {10}^9, p \times q \times r)$ を求めなさい。
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2022-01-21 01:00:18 +05:30
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# --hints--
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2022-01-22 20:38:20 +05:30
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`hugeBinomialCoefficient()` は `162619462356610300` を返す必要があります。
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2022-01-21 01:00:18 +05:30
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```js
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assert.strictEqual(hugeBinomialCoefficient(), 162619462356610300);
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```
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# --seed--
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## --seed-contents--
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```js
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function hugeBinomialCoefficient() {
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return true;
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}
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hugeBinomialCoefficient();
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```
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# --solutions--
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```js
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// solution required
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```
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