【题目】平方和

【通过测试】代码

import java.util.Scanner;
import java.util.ArrayList;
import java.util.List;
// 1:无需package
// 2: 类名必须Main, 不可修改

public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        //在此输入您的代码...
        int n = 2019;
        String x = (n+"").toString();
        List<Integer> list = new ArrayList<>();
        for (int i = 1; i <= n; i++) {
            if ((i+"").contains("2")||(i+"").contains("0")||(i+"").contains("1")||(i+"").contains("9")) {
                list.add(i);
            }
        }
        long sum = 0;
        for (Integer m:list) {
            sum+=Math.pow(m,2.0);
        }
        S