#include <bits/stdc++.h>
using namespace std;

#define rep(i,n) repi(i,0,n)
#define repi(i,a,b) for(int i=int(a);i<int(b);++i)
#define long int64_t
#define ulong uint64_t

const int N = 10000;
int l, n, w[N];

void input()
{
    cin >> l >> n;
    rep(i, n) cin >> w[i];
}

const int inf = int(1e9);
int s[N + 1];

int solve()
{
    sort(w, w + n);
    partial_sum(w, w + n, s);
    s[n] = inf;
    return upper_bound(s, s + n, l) - s;
}

int main()
{
    cin.tie(0);
    ios_base::sync_with_stdio(false);

    input();
    cout << solve() << endl;
}