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 -=A[i];
		}
		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