public static void Main()
{
var elementsCount = int.Parse(Console.ReadLine());
var combinationLength = int.Parse(Console.ReadLine());
elementsToDisplay = Enumerable.Range(0, elementsCount).Select(x => Console.ReadLine()).ToArray();
var range = Enumerable.Range(0, combinationLength).Select(x => 1).ToArray();
Subsets.GenerateCombination(range, combinationLength, elementsCount);
}
private static void GenerateCombination(int[] range, int current, int count)
{
for (int i = 0; i < count; i++)
{
if (current > 1)
{
Subsets.GenerateCombination(range, current - 1, count);
}
else
{
Subsets.PrintElements(range);
}
range[range.Length - current]++;
}
range[range.Length - current] = 1;
}