import java.util.*;

public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int L = sc.nextInt(); 
int bn = sc.nextInt(); 
int[] bw = new int[bn];
int sum=0;
int answer=0;
for(int i=0;i<bn;i++){
  bw[i] = sc.nextInt(); 
}
Arrays.sort(bw);
for(int i=0;i<bn;i++){
  if(L>=sum+bw[i]){
    sum+=bw[i];
    if(i==bn-1)
    answer = bn;
  }else
  answer = i;
}
System.out.println(answer);
}
}