#include "stdafx.h"
#include <iostream>

using namespace std;

int main()
{
	int n;
	cin >> n;
	int k;
	cin >> k;
	int count = 0;    //孩子數
	int sum = 0;      //計數


	//初始化
	int *weigh = new int[n];
	for (int i = 0; i < n; i++)
	{
		cin >> weigh[i];
	}

	//氣泡排序
	for (int i = 0; i < n; i++)
	{
		for (int j = i + 1; j < n; j++)
		{
			if (weigh[i] > weigh[j])
			{
				int temp = weigh[i];
				weigh[i] = weigh[j];
				weigh[j] = temp;
			}
		}
	}                                     
	/*for (int i = 0; i < n; i++)
	{
	cout <<weigh[i] << " ";
	} */                                //輸出

	for (int i = 0; i < n; i++)
	{
		sum = weigh[i]+sum;
		if (sum >= k)
		{
			count++;
			sum = 0;
			
		}
		if (i == n - 1 && sum != 0 && sum < k)
			count++;                                        //如果是最後一個，並且不滿K，仍要加1
		
	}
	cout << count;
	delete[]weigh;             //釋放

	return 0;
}