#include <bits/stdc++.h>  

using namespace std;

#define FOR(i, j, k) for(int i = j; i < k; ++i)
#define rep(i, j) FOR(i, 0, j)
#define repr(i, j) for(int i = j; i >= 0; -i)
#define INF (1 << 30)
#define MOD 1e9 + 7

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> P;

int L, N;
vector<int> W;

int main(){
	scanf("%d %d", &L, &N);
	rep(i, N) {
		int w;
		scanf("%d", &w);
		W.push_back(w);
	}
	sort(W.begin(), W.end());
	int cnt = 0, now = 0;
	rep(i, N) {
		if(now + W[i] > L) break;
		now += W[i];
		++cnt;
	}
	printf("%d\n", cnt);
	return 0;
}