#include <iostream>
using namespace std;
int main()
{
    int n, x = 1;
    cin >> n;
    for (int i = 1; i <= n; i++)
    {
        for (int j = x; j <= x + (n - 1) * n; j += n)
        {
            if (j < 10)
            {
                cout << "  ";
            }
            else
            {
                cout << " ";
            }
            cout << j;
        }
        x++;
        cout << endl;
    }
    return 0;
}

#include <iostream>
using namespace std;
int main()
{
    int n, x;
    cin >> n;
    int a[n + 1][n + 1];
    for (int i = 1; i <= n; i++)
    {
        x = i;
        for (int j = 1; j <= n; j++)
        {
            a[i][j] = x;
            if (a[i][j] / 10 == 0)
            {
                cout << "  " << a[i][j];
            }
            else
            {
                cout << " " << a[i][j];
            }
            x += n;
        }
        cout << endl;
    }
    return 0;
}

猜猜哪个是这题答案？

#include <iostream>
using namespace std;
int main()
{
    int n;
    cin >> n;
    for(int i=1;i<=n;i++)
    {
        cout << " ";
        for(int j=1;j<=n;j++)
        {
            if((j-1)*n+i<10)
            {
                cout << " ";
            }
            cout << (j-1)*n+i << " ";
        }
        cout << endl;
    }
}

#include <iostream>
using namespace std;
int main()
{
    int n;
    cin >> n;
    for(int i=n;i>=1;i--)
    {
        cout << " ";
        for(int j=1;j<=n;j++)
        {
            if((i-1)*n+j<10)
            {
                cout << " ";
            }
            cout << (i-1)*n+j << " ";
        }
        cout << endl;
    }
}

#include <iostream>
using namespace std;
int main()
{
    int n;
    cin >> n;
    for(int i=1;i<=n;i++)
    {
        cout << " ";
        for(int j=1;j<=n;j++)
        {
            if((i-1)*n+j<10)
            {
                cout << " ";
            }
            cout << (i-1)*n+j << " ";
        }
        cout << endl;
    }
}