#include <iostream>
#include <math.h>
#include <algorithm>
#include <functional>
#include <vector>
#include <typeinfo>
#include <climits>
using namespace std;
#define INIT cin.tie(0); ios::sync_with_stdio(false);
#define FOR(i, a, n) for (int i = a; i < n; i++)
#define REP(i, n) for(int i = 0; i < n; i++)

int main()
{
    INIT;

    int l, n;
    cin >> l >> n;
    int W[n];
    REP(i, n) cin >> W[i];

    sort(W, W + n);
    int c = 0, sum = 0;
    REP(i, n){
        sum += W[i];
        if(sum > l) break;
        c++;
    }

    cout << c << endl;


    return 0;
}