[BOJ] 백준 1699 제곱수의 합

[문제]

https://www.acmicpc.net/problem/1699

 

 

[소스 코드]

import java.io.*;
import java.util.*;
public class Main {
    public static void main(String[] args) throws IOException {
    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    	int n = Integer.parseInt(br.readLine());
    	int[] dp = new int[n+1];
    	for(int i=1;i<=n;i++) {
    		dp[i] = i;
    		for(int j=2;j*j<=i;j++) {
    			dp[i] = Math.min(dp[i], dp[i-j*j] + 1);
    		}
    	}
    	System.out.println(dp[n]);
    }
}