#include "bits/stdc++.h"

using namespace std;
using ll = long long;

void Main() {
    int L, N;
    cin >> L >> N;
    vector<int> W(N, 0);
    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) {
        if (L - W[i] >= 0) {
            ++ans;
            L -= W[i];
        }
    }
    cout << ans << endl;
}

int main() {
    std::cout << std::fixed << std::setprecision(15);
    Main();
    return 0;
}