#include <iostream>
using namespace std;

int main()
{
	int L, N, sum = 0, count = 0;
	int W[10000];
	
	cin >> L >> N;
	for(int i = 0; i < N; ++i)
	{
		cin >> W[i];
	}
	
	for(int i = 0; i < N - 1; ++i)
	{
		for(int j = N - 1; j > i; --j)
		{
			if(W[j - 1] > W[j])
			{
				int temp = W[j - 1];
				W[j - 1] = W[j];
				W[j] = temp;
			}
		}
	}
	
	for(int i = 0; (i < N) && ((sum + W[i]) <= L); ++i)
	{
		sum += W[i];
		++count;
	}
	
	cout << count << endl;
	
	
	return 0;
}