题解 | #尼科彻斯定理#

import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        while (in.hasNextLine()) {
            String nextLine = in.nextLine();
            if (Objects.isNull(nextLine) || nextLine.equals("")) {
                break;
            }
            int n = Integer.parseInt(nextLine);
            List<String> calc = new ArrayList<>();
            int n1 = n * (n - 1) + 1;
            calc.add(n1 + "");
            for (int i = 1; i < n; i++) {
                calc.add(n1 + 2 * i + "");
            }
            System.out.println(String.join("+", calc));
        }
    }
}