#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.at(i);
    }
    sort(w.begin(), w.end());
    int count = 0;
    for (int i = 0; i < n; i++) {
        count += w.at(i);
        if (l < count) {
            cout << i << endl;
            return 0;
        }
    }
    cout << n << endl;
    return 0;
}