#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <fstream>

int main(void) {

	//test用
	//std::ifstream in("test.txt");
	//std::cin.rdbuf(in.rdbuf());

	int L, N;
	std::cin >> L >> N;
	std::vector<int> W(N);

	for (int i = 0; i < N; i++) {
		std::cin >> W[i];
	}
	std::sort(W.begin(), W.end());

	int max = 0;
	int i = 0;
	while (i < N) {
		max += W[i];
		if (max <= L) {
			i++;
		}
		else {
			break;
		}
	}

	std::cout << i << std::endl;

}