import java.util.*;
 
public class Main {
    public static void main(String[] args){
        Scanner scn = new Scanner(System.in);
        int H = scn.nextInt();
        int N = scn.nextInt();
        
        int [] A = new int [N];
        int sum = 0;
        
        for(int i=0;i<N;i++){
            A[i] = scn.nextInt();
            sum += A[i];             
        }
        
        if(sum>=H){
            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