#include <iostream>
using namespace std;
int main()
{
    int n;
    cin >> n;
    int a[n + 1][n + 1];
    for (int i = 1; i <= n; i++)
    {
        for (int j = 1; j <= n; j++)
        {
            a[i][j] = min(i, j);
        }
    }
    for (int i = n; i >= 1; i--)
    {
        for (int j = n; j >= 1; j--)
        {
            cout << "  " << a[i][j];
        }
        cout << endl;
    }
    return 0;
}

#include<iostream>
#include<iomanip>
using namespace std;

int main(){
	int n;
	cin >> n;
	for(int i = 1;i <= n;i++){
		for(int j = 1;j <= n;j++){
			cout << setw(3) << n + 1 - max(i,j);
		}
		cout << "\n";
	}
}

简单！