#include <bits/stdc++.h>
using namespace std;


int main()
{
	int L, N;
	cin >> L >> N;
	vector<int> W( N );
	for( int i = 0; i < N; i++ ) {
		cin >> W[i];
	}

	sort( W.begin(), W.end() );
	int ans = 0;
	int l = 0;
	for( int i = 0; i < N; i++ ) {
		if( l + W[i] > L ) break;
		l += W[i];
		ans++;
	}

	cout << ans << endl;
}