题解 | #HJ035 蛇形矩阵#

import java.util.Scanner;

/**
 * HJ35 蛇形矩阵
 */
public class HJ035 {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            int n = sc.nextInt();
            for (int i = 1; i <= n; i++) {
                for (int j = 0; j <= n - i; j++) {
                    int num = (i + j) * (i + j + 1) / 2 - (i - 1);
                    System.out.print(num);
                    System.out.print(" ");
                }
                System.out.println();
            }
        }
        sc.close();
    }

}