# include <cstdio>
# include <iostream>
using namespace std;
int main(){
    int h,n,x,s=0;
    cin>>h>>n;
    for(int i=1;i<=n;i++){
    	cin>>x;
    	s+=x;
}
    if(s>=h)cout<<"Yes"<<endl;
    else cout<<"No"<<endl;
	return 0;
}