#pragma GCC  target("sse4,avx,tune=native")
#pragma GCC  optimize("O3")

#include <iostream>
#include <cstdint>
#include <vector>
#include <algorithm>

using namespace std;

int main()
{
	cin.tie(nullptr);
	ios::sync_with_stdio(false);

	uint16_t L, N, i, sum = 0;
	cin >> L >> N;
	vector<uint16_t> W(N);
	for (i = 0; i != N; ++i) cin >> W[i];

	sort(W.begin(), W.end());
	for (i = 0; i != N; ++i)
	{
		sum += W[i];
		if (sum > L) break;
	}

	cout << i << '\n';
	return 0;
}