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

int main() {
    int lim, n;
    cin >> lim >> n;
    vector<int> w(n);
    for (int &e : w) cin >> e;
    
    sort(w.begin(), w.end());
    
    int ans = 0, val = 0;
    for (const auto &e : w) {
        val += e;
        if (val > lim) break;
        ans++;
    }
    
    cout << ans << endl;
    return 0;
}