#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[i];
    }
    sort(w.begin(), w.end());

    int ans = 0, sum = 0;
    for (int i = 0; i < n; ++i) {
        if (sum + w[i] <= l) {
            sum += w[i];
            ans++;
        } else {
            break;
        }
    }

    cout << ans << endl;
    return 0;
}