import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int h = sc.nextInt();
      	int n = sc.nextInt();
        int a[] = new int[n];
        int i;
		// 出力
      for(i = 0; i < n; i++){
        h -= sc.nextInt();
      }
	  if(h <= 0){
            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