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

int main(){
    int L, N;
    cin >> L >> N;
    vector<int> A(N);
    for (int& x : A) cin >> x;
    sort(A.begin(), A.end());

    int S = 0;
    for (int i = 0; i < N; i++){
        S += A[i];
        if (S > L){
            cout << i << endl;
            return 0;
        }
    }

    cout << N << endl;
}