70-爬楼梯.cpp

/*
 * @lc app=leetcode.cn id=70 lang=cpp
 *
 * [70] 爬楼梯
 */
#include <vector>
using namespace std;
// @lc code=start
class Solution
{
public:
    int climbStairs(int n)
    {
        vector<int> dp(n + 1);
        dp[0] = 1;
        dp[1] = 1;
        for (int i = 2; i < n + 1; i++) {
            dp[i] = dp[i - 1] + dp[i - 2];
        }
        return dp[n];
    }
};
// @lc code=end