#include <iostream>
#include <sstream>
#include <string>
#include <vector>
#include <list>
#include <stack>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <algorithm>
#include <functional>
#include <limits>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <climits>
#include <complex>

using namespace std;

#define INF (INT_MAX/3)
#define PI (2*acos(0.0))
#define EPS (1e-8)

typedef long long ll;
typedef unsigned long long ull;

int main(){
    ios_base::sync_with_stdio(0);
    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 len = 0, cnt = 0;
    for(int i = 0; i < W.size(); i++){
        len += W[i];
        if(len > L) break;
        cnt++;
    }
    cout << cnt << endl;
    return 0;
}