#5ZeroSubset

using System;

class ZeroSubset
{
    static void Main()
    {
        Console.WriteLine("Enter 5 integer numbers.");
        int a = int.Parse(Console.ReadLine());
        int b = int.Parse(Console.ReadLine());
        int c = int.Parse(Console.ReadLine());
        int d = int.Parse(Console.ReadLine());
        int e = int.Parse(Console.ReadLine());
        Console.WriteLine("Zero subset:");
        if (a + b == 0) Console.WriteLine("{0} and {1} = 0", a, b);
        if (a + c == 0) Console.WriteLine("{0} and {1} = 0", a, c);
        if (a + d == 0) Console.WriteLine("{0} and {1} = 0", a, d);
        if (a + e == 0) Console.WriteLine("{0} and {1} = 0", a, e);
        if (a + b + c == 0) Console.WriteLine("{0}, {1} and {2} = 0", a, b, c);
        if (a + b + d == 0) Console.WriteLine("{0}, {1} and {2} = 0", a, b, d);
        if (a + b + e == 0) Console.WriteLine("{0}, {1} and {2} = 0", a, b, e);
        if (a + c + d == 0) Console.WriteLine("{0}, {1} and {2} = 0", a, c, d);
        if (a + c + e == 0) Console.WriteLine("{0}, {1} and {2} = 0", a, c, e);
        if (a + d + e == 0) Console.WriteLine("{0}, {1} and {2} = 0", a, d, e);
        if (a + b + c + d == 0) Console.WriteLine("{0}, {1}, {2} and {3} = 0", a, b, c, d);
        if (a + b + c + e == 0) Console.WriteLine("{0}, {1}, {2} and {3} = 0", a, b, c, e);
        if (a + b + d + e == 0) Console.WriteLine("{0}, {1}, {2} and {3} = 0", a, b, d, e);
        if (a + c + d + e == 0) Console.WriteLine("{0}, {1}, {2} and {3} = 0", a, c, d, e);
        if (b + c == 0) Console.WriteLine("{0} and {1} = 0", b, c);
        if (b + d == 0) Console.WriteLine("{0} and {1} = 0", b, d);
        if (b + e == 0) Console.WriteLine("{0} and {1} = 0", b, e);
        if (b + c + d == 0) Console.WriteLine("{0}, {1} and {2} = 0", b, c, d);
        if (b + c + e == 0) Console.WriteLine("{0}, {1} and {2} = 0", b, c, e);
        if (b + d + e == 0) Console.WriteLine("{0}, {1} and {2} = 0", b, d, e);
        if (b + c + d + e == 0) Console.WriteLine("{0}, {1}, {2} and {3} = 0", b, c, d, e);
        if (c + d == 0) Console.WriteLine("{0} and {1} = 0", c, d);
        if (c + e == 0) Console.WriteLine("{0} and {1} = 0", c, e);
        if (c + d + e == 0) Console.WriteLine("{0}, {1} and {2} = 0", c, d, e);
        if (d + e == 0) Console.WriteLine("{0} and {1} = 0", d, e);
        if (a + b + c + d + e == 0) Console.WriteLine("{0}, {1}, {2}, {3} and {4} = 0", a, b, c, d, e);
        else
        {
            Console.WriteLine("No zero subset!");
        }
    }
}