using System;
 
namespace Application
{
    class Program
    {
        static int cmp(int i, int j, int[,] s)
        {
            int sum = 0;
            for(int k = 0; k < s.GetLength(1); ++k)
            {
                sum += (s[i,k]-s[j,k])*(s[i,k]-s[j,k]);
            }
            return sum;
        }
        static void Main(string[] args)
        {
            int[,] s = {{0, 1, 1, 1, 1},{0, 0, 1, 0, 1},
            {1, 1, 1, 1, 1},{0, 0, 0, 0, 0}};
 
            int min = int.MaxValue, r1 = 0, r2 = 0;
            for(int i = 0; i < s.GetLength(0); ++i)
                for(int j = i+1; j < s.GetLength(0); ++j)
                {
                    int diff = cmp(i,j,s);
                    if (diff < min)
                    {
                        min = diff;
                        r1 = i;
                        r2 = j;
                    }
                }
            Console.WriteLine(r1+" and "+r2);
 
        }
    }
}
 
 

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