题解 | #蛇形矩阵#

import java.util.*;


public class Main {
    public static void main(String[] args) {
        Scanner fzhinput = new Scanner(System.in);
        int num = fzhinput.nextInt();
        int sum=0,sz=1,n=1;
        for(int i=1;i<=num;i++){
            int x=i;
            sum+=x;
        }

        for(int j=1;j<=num;j++){
            for(int i=j+1;i<=num+1;i++){
                System.out.print(sz+" ");
                sz+=i;
            }
            System.out.println();
            n+=j;
            sz=n;
        }
        
        
    }
}