Problem

1/7

フィボナッチ数: 再帰記憶 (C++)

Problem

N 番目のフィボナッチ数を出力します。

time 1000 ms
memory 256 Mb
Rules for program design and list of errors in automatic problem checking

Teacher commentary

Insert the missing code snippets
C++
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#include <iostream>
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using namespace std;
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long long A[10000];
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long long f(long long n) {
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	if (A[n] != 0)
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		return A[n];
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	if (n < 2) return n;
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	else {
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		return A[n];
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	}
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}
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int main()
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{
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	int n;
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	cin >> n;
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	cout << f(n);
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	return 0;
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}

     

Program check result

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