Leetcode刷题笔记(c++)

class Solution {
public:
    int numSquares(int n) {
        vectorout;
        out.emplace_back(0);
        for(int i=1;i<=n;i++){
            int min_n=i;
            for(int j=1;j*j<=i;j++){
                min_n=min(min_n,out[i-j*j]+1);
            }
            out.emplace_back(min_n);
        }
        return out[n];
    }
};