#include <bits/stdc++.h>
using namespace std;
template <typename T> using vec = vector<T>;
template <typename T> using vvec = vector<vector<T>>;

constexpr int64_t mpow(int64_t a, int64_t b, int64_t mod = 1000000007) {
    if (b <= 0) { return 1; } if (b == 1) { return a % mod; } if (b == 2) { return (a * a) % mod; }
    return (max(a * (b & 1), (int64_t)1) * mpow(mpow(a, b / 2, mod), 2, mod)) % mod;
}
constexpr int64_t mdiv(int64_t a, int64_t b, int64_t mod = 1000000007) {
    return (a * mpow(b, mod - 2, mod)) % mod;
}

int main() {
    int l, n; cin >> l >> n;
    vec<int> w(n);
    for (auto &e : w) cin >> e;
    sort(w.begin(), w.end());

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