#include <algorithm>
#include <iostream>
#include <string>
#include <vector>

using namespace std;

static void setup()
{
    cin.tie(0);
    ios::sync_with_stdio(false);
}

static void run()
{
    int l, n;
    cin >> l >> n;

    vector<int> ws;
    ws.resize(n);
    for (auto i = 0; i < n; ++i) {
        cin >> ws[i];
    }

    sort(begin(ws), end(ws));

    auto rl = 0;
    auto rn = 0;
    for (const auto w : ws) {
        rl += w;
        if (rl > l) break;
        rn += 1;
    }

    cout << rn << endl;
}

int main(int argc, char **argv)
{
    setup();
    run();
    return 0;
}