#include <bits/stdc++.h>
#define MOD 1000000007

using namespace std;

typedef pair<int,int> P;
typedef pair<int,pair<int,int>> PP;
typedef long long LL;

const double EPS = 1e-8;
const int INF = 1e9;

int dy[] = {0,1,0,-1};
int dx[] = {1,0,-1,0};

int main(void) {
	int L;
	int 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,cnt = 0;
	for(int i=0;i<N;i++){
		if(sum + w[i] > L)break;
		sum += w[i];
		cnt++;
	}
	cout << cnt << endl;

	return 0;
}