import java.util.Scanner;
public class Main{
  public static void main(String[] args){

    Scanner sc = new Scanner(System.in);

    int Hp = sc.nextInt();
    int N = sc.nextInt();

    for(int i = 0; i < N; i++){
      int attack = sc.nextInt();
      Hp = Hp - attack;
    }

    if(Hp > 0){
      System.out.println("No");
    }else{
      System.out.println("Yes");
    }
  }
}
/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