import java.io.*;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        
        int L = Integer.parseInt(br.readLine());
        int N = Integer.parseInt(br.readLine());
        
        String[] input = br.readLine().split(" ");
        
        int[] W = new int[N];
        for(int i = 0; i < N; i++) W[i] = Integer.parseInt(input[i]);
        
        for(int i = 0; i < N - 1; i++) {
            for(int j = i + 1; j < N; j++) {
                if(W[i] > W[j]) {
                    int x = W[i];
                    W[i] = W[j];
                    W[j] = x;
                }
            }
        }
        
        int sum   = 0;
        int count = 0;
        for(int i = 0; i < N; i++) {
            if(sum + W[i] <= L) {
                sum += W[i];
                count++;
            }
        }
        System.out.println(count);
    }
}