/*package whatever //do not write package name here */

import java.io.*;
import java.util.*;

public class Main {
	public static void main (String[] args) {
        Scanner sc=new Scanner(System.in);
        int h,a,i,t;
        h=sc.nextInt();
        a=sc.nextInt();
        int f=0;
        for(i=0;i<a;i++)
        {
            t=sc.nextInt();
            h-=t;
            if(h<=0)
            {
                f=1;
            }
        }
        if(f==1)
        {
            System.out.println("Yes");
        }else
        {
            System.out.println("No");
        }
        
        
	}
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz