题解 | #N阶楼梯上楼问题#
N阶楼梯上楼问题
https://www.nowcoder.com/practice/c978e3375b404d598f1808e4f89ac551
#include <bits/stdc++.h>
#define MAX 100
using namespace std;
int main(){
int dp[MAX],n;
while(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];
}
}