#include<bits/stdc++.h>
using namespace std;
using LL = long long;
using ULL = unsigned long long;
#define rep(i,n) for(int i=0; i<(n); i++)

int L, N;
int W[10000];

int main() {
    cin >> L >> N;
    rep(i, N) cin >> W[i];
    sort(W, W + N);
    int ans = 0;
    rep(i, N) { if (L >= W[i]) { L -= W[i]; ans++; } }
    cout << ans << endl;

    return 0;
}