#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }

const int INF = 1e9;
const int MOD = 1e9+7;
const ll LINF = 1e18;

#define REP(i,n) for(int i=0;i<(n);++i)
#define COUT(x) cout<<(x)<<"\n"
#define COUT16(x) cout << fixed << setprecision(16) << (x) << "\n";

int main(){
    int l,n;
    cin >> l >> n;
    vector<int>w(n);
    REP(i,n)cin >> w[i];
    sort(w.begin(),w.end());
    vector<int> wa(n+1,0);
    REP(i,n){
        wa[i+1] = wa[i] + w[i];
    }
    int ans;
    for(int i=0;i<=n;i++){
        if(wa[i]<=l){
            ans = i;
        }
    }
    COUT(ans);
}