#include <cstdio>
#include <algorithm>
using namespace std;

int main(){
	int L, N, W[10000];
	int sum, count;
	sum = count = 0;
	scanf("%d", &L);
	scanf("%d", &N);
	for (int i = 0; i < N; i++){
		scanf("%d", &W[i]);
	}

	sort(W, W + N);
	for (int i = 0; i < N; i++){
		sum += W[i];
		if (sum <= L) count++;
		else break;
	}

	printf("%d\n", count);
	return 0;
}