07. NxN Matrix

using System;

namespace NxNMatrix
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            string print = "";
            Console.WriteLine(NxNMatrix(n, print));
        }

        static string NxNMatrix(int n, string print)
        {
            for (int i = 0; i < n; i++)
            {
                for (int j = 0; j < n; j++)
                {
                    print += $"{n} ";
                }
                print += '\n';
            }
            return print;
        }
    }
}