import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Arrays;

public class Main {
	public static void main(String args[]) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String line = br.readLine();
		int l = Integer.parseInt(line);
		line = br.readLine();
		int n = Integer.parseInt(line);
		line = br.readLine();
		String[] lines = line.split(" ");
		int[] ws = new int[n]; 
		
		for (int t = 0; t < n; t++) {
			ws[t] = Integer.parseInt(lines[t]);
		}
		
		Arrays.sort(ws);

		int total = 0;
		int res = 0;
		for (int w : ws) {
			if ((total + w) > l) {
				break;
			}
			total += w;
			res++;
		}
		System.out.println(res);
	}
}