题解 | #跳台阶#
跳台阶
https://www.nowcoder.com/practice/bfb2a2b3cdbd4bd6bba0d4dca69aa3f0
#include <iostream>
using namespace std;
const int N = 41;
int dp[N];
int main()
{
int n;
cin >> n;
dp[0] = 0;
dp[1] = 1;
dp[2] = 2;
for(int i = 3;i <= n;i++)
{
dp[i] = dp[i-1] + dp[i-2];
}
cout << dp[n] << endl;
return 0;
}
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