#include<bits/stdc++.h>
#define endl '\n'
#define MAXN 100000
using namespace std;

int l, n, w[MAXN], sum = 0;

int main()
{
    cin >> l >> n;
    for(int i = 0; i < n; i++)
    {
        cin >> w[i];
    }

    sort(w, w + n, less<int>());

    bool flag = false;
    for(int i = 0; i < n; i++)
    {
        sum += w[i];
        if(sum > l)
        {
            flag = true;
            cout << i << endl;
            break;
        }
    }

    if(!flag)
        cout << n << endl;

    return 0;
}