import java.util.*;
public class Main {
    public static void main(String[] args) {
    
    Scanner sc = new Scanner(System.in);

      int HP = sc.nextInt();//モンスターHP
      int N = sc.nextInt();//必殺技の種類
      int sum = 0;//必殺技の和
           
      //各必殺技を足す
      for(int i = 1; i<=N; i++){
        int hit = sc.nextInt();
        sum += hit;       
      }  
      //必殺技の和でモンスターを倒せるか
       System.out.print( sum>=HP ? "Yes":"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