#include <bits/stdc++.h>
using namespace std;
int main(){
    int L, n, w[10010];
    cin >> L;
    cin >> n;
    for(int i = 0; i < n; ++ i) cin >> w[i];
    sort(w, w + n);
    for(int i = 0; i < n; ++ i){
         L -= w[i];
         if(L < 0) cout << i << endl, exit(0);
    }
    cout << n << endl;
    return 0;
}