ifstream cin("input.txt");
	ofstream cout("output.txt");

	int N, Q;
	cin >> N >> Q;
	int *array = new int[N];
	for (int i = 0; i < N; i++)
	{
		cin >> array[i];
	}
	sort(array, array + N);

	//for (int i = 0; i < N; i++)
	//{
	//	cout << array[i] << " ";
	//}

	int k = 0;
	int j = 0;
	for (int i = 0; i < N; i++)
	{
		if (array[N - i - 1] = Q)
			k++;
		else
		if (array[N - i - 1] < Q)
		{
			if ((N - i - 1) != j)
			{
				if (array[N - i - 1] + array[j] <= Q)
				{
					k++;
					j++;
				}
				else
					k++;
			}
			else
				k++;
		}
	}
	cout << k;