#include <iostream>
#include <algorithm>

using namespace std;

int main()
{
    int L, N, w[10010];
    cin >> L >> N;
    for (int i = 0; i < N; i++)
        cin >> w[i];

    sort(w, w + N);

    int sum = 0, cnt = 0;
    for (int i = 0; i < N; i++)
    {
        if (L > sum + w[i])
        {
            sum += w[i];
            cnt++;
        }
        else
        {
            break;
        }
    }

    cout << cnt << endl;
    
    return 0;
}