#include <iostream>
#include <vector>
#include <algorithm>

int main() {
    int l, n;
    std::cin >> l >> n;
    
    std::vector<int> w(n);
    for (auto& x : w) {
        std::cin >> x;
    }
    std::sort(w.begin(), w.end());

    int c = 0;
    for (auto x : w) {
        l -= x;
        if (l < 0) break;
        c++;
    }
    
    std::cout << c;
    
    return 0;
}