18 lines
309 B
C++
18 lines
309 B
C++
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#include <bits/stdc++.h>
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using namespace std;
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//著名的斐波纳契数列
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int Fibonacci(int n) {
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if (n == 0) return 0;
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if (n == 1) return 1;
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return Fibonacci(n - 1) + Fibonacci(n - 2);
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}
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int main() {
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int n;
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cin >> n;
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cout << Fibonacci(n) << endl;
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return 0;
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}
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