#include<iostream>
#include<iomanip>
#include<algorithm>
#include<vector>
#include<string>
#include<math.h>

#define REP(i,a,b) for(int i=(a);i<(b);i++)
#define rep(i,n) for(int i=0;i<(n);i++)
#define ALL(i) (i).begin(),(i).end()
#define rALL(i) (i).rbegin(),(i).rend()
#define debug(x) cout<<#x<<": "<<x<<endl
#define pi M_PI

typedef long long ll;
typedef unsigned long long ull;

using namespace std;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
/*-------- code --------*/
    int l, n;
    int t = 0;
    int c = 0;
    int w[10000];

    cin >> l >> n;
    rep(i,n) cin >> w[i];

    sort(w,w+n);
    rep(i,n){
        if(l >= t + w[i]){
            t += w[i];
            c++;
        } else {
            break;
        }
    }

    cout << c << endl;
    return 0;
}