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										 |  |  |  | title: '問題 365: 巨大な二項係数' | 
					
						
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										 |  |  |  | challengeType: 5 | 
					
						
							|  |  |  |  | forumTopicId: 302026 | 
					
						
							|  |  |  |  | dashedName: problem-365-a-huge-binomial-coefficient | 
					
						
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							|  |  |  |  | # --description--
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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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										 |  |  |  | $M(n, k, m)$ を、二項係数 $\displaystyle\binom{n}{k}$ mod $m$ とします。 | 
					
						
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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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							|  |  |  |  | # --hints--
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										 |  |  |  | `hugeBinomialCoefficient()` は `162619462356610300` を返す必要があります。 | 
					
						
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							|  |  |  |  | ```js | 
					
						
							|  |  |  |  | assert.strictEqual(hugeBinomialCoefficient(), 162619462356610300); | 
					
						
							|  |  |  |  | ``` | 
					
						
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							|  |  |  |  | # --seed--
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							|  |  |  |  | ## --seed-contents--
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							|  |  |  |  | ```js | 
					
						
							|  |  |  |  | function hugeBinomialCoefficient() { | 
					
						
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							|  |  |  |  |   return true; | 
					
						
							|  |  |  |  | } | 
					
						
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							|  |  |  |  | hugeBinomialCoefficient(); | 
					
						
							|  |  |  |  | ``` | 
					
						
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							|  |  |  |  | # --solutions--
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							|  |  |  |  | ```js | 
					
						
							|  |  |  |  | // solution required | 
					
						
							|  |  |  |  | ``` |