import java.util.*;

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

        int health = Integer.parseInt(scan.next()); 
        int varN   = Integer.parseInt(scan.next());
        ArrayList<Integer> attack = new ArrayList<Integer>();
        for(int i=0; i<varN; i++){
            attack.add( Integer.parseInt( scan.next() ) );
        }

        boolean flag = false;

        for(int i=0; i<varN; i++){
            health -= attack.remove(0);

            if(health <= 0){
                flag = true;
                break;
            }
        }

        if(flag){
            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