SAP

using System;

namespace SAP
{
    class SAP
    {
        static void Main(string[] args)
        {
            int a = 0;
            int b = 0;
            int c = 0;
            string str = "";
            for (int i = 1; i < 7; i++)
            {
                for (int j = 1; j < 7; j++)
                {
                    for (int k = 1; k < 7; k++)
                    {
                        a = 49 * i + 8 * j;     // decimal notation
                        b = i + 56 * j;        // decimal notation
                        c = 7 * i + 50 * k;   // decimal notation
                        str = i.ToString() + j.ToString() + k.ToString();
                        if (a - b == c && i > j)
                        {
                            Console.WriteLine("X = {0}", i);
                            Console.WriteLine("Y = {0}", j);
                            Console.WriteLine("Z = {0}", k);
                            Console.WriteLine("XYZ = " + str);
                            Console.WriteLine();
                        }
                    }
                }
            }
        }
    }
}