#include <bits/stdc++.h>
using namespace std;
#define all(x) x.begin(),x.end()
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
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;}
using ll = long long;

int l,n,sum,ans;
int w[100005];

int main(){
    cin >> l >> n;
    rep(i,n) cin >> w[i];
    sort(w,w+n);
    rep(i,n) if(sum+w[i]<=l) sum+=w[i], ans++;
    cout << ans << endl;
}