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

      int H = sc.nextInt();
      int N = sc.nextInt();
      int[] A = new int[N];

      for(int i = 0;i < A.length;i++){
       A[i] = sc.nextInt();
      }

      for(int i = 0;i < A.length;i++){
       H -= A[i];
      }

      if(H <= 0){
       System.out.print("Yes");
      }else{
       System.out.print("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