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];
        int sum = 0;
      
      	for(int i=0; i<N; i++){
          	A[i] = sc.nextInt();
          	sum += A[i];
        }
      	
      	if((H-sum)<=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