C#BasicsExam_11.4.14_MagicStrings

using System;

class MagicStrings
{
    static void Main()
    {
        int diff = int.Parse(Console.ReadLine());
        int[] digits = { 1, 4, 5, 3 };
        int[] places = { 1, 1, 1, 1, 1, 1, 1, 1 };
        bool solution = false;

        for (int i = 0; i < 4; i++)
        {
            for (int j = 0; j < 4; j++)
            {
                for (int k = 0; k < 4; k++)
                {
                    for (int l = 0; l < 4; l++)
                    {
                        for (int m = 0; m < 4; m++)
                        {
                            for (int n = 0; n < 4; n++)
                            {
                                for (int o = 0; o < 4; o++)
                                {
                                    for (int p = 0; p < 4; p++)
                                    {
                                        places[0] = digits[i];
                                        places[1] = digits[j];
                                        places[2] = digits[k];
                                        places[3] = digits[l];
                                        places[4] = digits[m];
                                        places[5] = digits[n];
                                        places[6] = digits[o];
                                        places[7] = digits[p];

                                        if (Math.Abs(places[0] + places[1] + places[2] + places[3]
						- places[4] - places[5] - places[6] - places[7]) == diff)
                                        {
                                            foreach (var place in places)
                                            {
                                                switch (place)
                                                {
                                                    case 1: Console.Write('k'); break;
                                                    case 4: Console.Write('n'); break;
                                                    case 5: Console.Write('p'); break;
                                                    case 3: Console.Write('s'); break;
                                                    default:
                                                        break;
                                                }
                                            }
                                            Console.WriteLine();
                                            solution = true;
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
        if (!solution)
        {
            Console.WriteLine("No");
        }
    }
}