#include"bits/stdc++.h"

//#include<bits/stdc++.h>
using namespace std;
#define print(x) cout<<x<<endl;
#define rep(i,a,b) for(int i=a;i<b;i++)
#define REP(i,a) for(int i=0;i<a;i++)
typedef long long ll;
typedef pair<int, int> PI;
typedef pair<int, PI> V;
typedef vector<int> VE;
const ll mod = 100000000000;

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 sum = 0;
	int ans = 0;
	for (int i = 0; i < N; i++)
	{
		sum += W[i];
		if (sum <= L) ans++;
		else break;
	}
	cout << ans << endl;
}