import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        //値を取得
        Scanner sc = new Scanner(System.in);
        int H = sc.nextInt();
        int N = sc.nextInt();
        int[] A = new int[N];   //必殺技
        for (int i = 0; i < N; ++i){
            A[i] = sc.nextInt();
        }
        
        int HP = H;  //残り体力
        
        for (int i = 0; i < N; ++i){
            HP -= A[i];
            
            if(HP <= 0){
                System.out.println("Yes");
                System.exit(0);
            }
        }

        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