#include <bits/stdc++.h>
using namespace std;

//-----
using ll = long long;

//-----
#define ALL(x) (x).begin(),(x).end()
#define PRINT(n) cout << n << "\n";
#define REP(i,n) for(int i=0;i<(int)n;++i)

void no5();

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    no5();
}

void no5() {
    ll l, n;
    cin  >> l >> n;
    vector<ll> w(n,0);
    REP(i,n) cin >> w[i];
    sort(ALL(w));
    int ans = 0;
    REP(i,n){
        l -= w[i];
        if (l >= 0){
            ans++;
        }
    }
    PRINT(ans)
    cout << flush;
}