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<n; i++){
		    a[i] = sc.nextInt();
		    h = h-a[i];
		    if(h<=0){
		        System.out.println("Yes");
		        return;
		    }
		}
		
		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