#include <bits/stdc++.h> 

using i64 = long long; 
using u64 = unsigned long long; 
using u32 = unsigned; 

using u128 = unsigned __int128; 
using i128 = __int128; 

void solve() {
	int L, N; 
	std::cin >> L >> N;

	std::vector<int> W(N);
	for(int& x : W) std::cin >> x;

	std::sort(W.begin(), W.end());

	int ans = 0, sum = 0;

	for(int i = 0; i < N; i ++) {
		sum += W[i];
		if(sum > L) break;
		ans ++;
	}

	std::cout << ans << "\n";
} 

int main() { 
	std::ios::sync_with_stdio(false); 
	std::cin.tie(nullptr); 

	int T = 1; 
	//std::cin >> T; 

	while (T--) { 
		solve(); 
	} 
	return 0; 
}