using System;

​

public class ZeroSubset

{

    public static void Main()

    {

        int[] numbers = new int[5];

        numbers[0] = int.Parse(Console.ReadLine());

        numbers[1] = int.Parse(Console.ReadLine());

        numbers[2] = int.Parse(Console.ReadLine());

        numbers[3] = int.Parse(Console.ReadLine());

        numbers[4] = int.Parse(Console.ReadLine());

​

        bool result = false;

        for (int a = 0; a < numbers.Length; a++)

        {

            for (int b = a + 1; b < numbers.Length; b++)

            {

                if (a == b)

                { 

​

                }

                else if (numbers[a] + numbers[b] == 0)

                {

                    Console.WriteLine("{0} + {1} = 0", numbers[a], numbers[b]);

                    result = true;

                }

                    for (int c = b + 1; c < numbers.Length; c++)

                    {

                        if (a == b || b == c)

                        { 

​

                        }

                        else if (numbers[a] + numbers[b] + numbers[c] == 0)

                        {

                            Console.WriteLine("{0} + {1} + {2} = 0", numbers[a], numbers[b], numbers[c]);

                            result = true;

                        }

                    for (int d = c + 1; d < numbers.Length; d++)

                    {

                        if (a == b || b == c || c == d)

                        {

​

                        }

                        else if (numbers[a] + numbers[b] + numbers[c] + numbers[d] == 0)

                        {

                            Console.WriteLine("{0} + {1} + {2} {3} = 0", numbers[a], numbers[b], numbers[c], numbers[d]);

                            result = true;

                        }

                        for (int e = d + 1; e < numbers.Length; e++)

                        {

                            if (numbers[a] + numbers[b] + numbers[c] + numbers[d] + numbers[e] == 0)

                            {

                                Console.WriteLine("{0} + {1} + {2} {3} {4} = 0", numbers[a], numbers[b], numbers[c], numbers[d], numbers[e]);

                                result = true;

                            }

                        }

                    }

                }

            }

        }

        if (result == false)

        {

            Console.WriteLine("no zero subset");

        }

    }

​

​

}

​

​

​