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#include <bits/stdc++.h>
using namespace std;
// 原题目: https://blog.csdn.net/weixin_45485719/article/details/103219960
int dp(int n) {
if (n == 2) return 2;
if (n == 3) return 3;
return dp(n - 1) + dp(n - 2);
}
const int N = 110;
int f[N];
int main() {
int n;
scanf("%d", &n);
//递归
printf("%d\n", dp(n));
//递推
f[2] = 2, f[3] = 3;
for (int i = 4; i <= n; i++) f[i] = f[i - 1] + f[i - 2];
printf("%d\n", f[n]);
return 0;
}