import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.Arrays;

public class NumBlocks{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);

        int L = sc.nextInt();
        int N = sc.nextInt();

        int[] W = new int[N];
        for(int i = 0; i < N; i++){
            W[i] = sc.nextInt();
        }
        Arrays.sort(W);
        int blocks_width = 0;
        int num_blocks = 0;
        for(int i = 0; i < N; i++){
            if(blocks_width + W[i] > L){
                break;
            }else{
                blocks_width += W[i];
                num_blocks++;
            }
        }
        System.out.println(num_blocks);
    }
}