#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define endl "\n"

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

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