114514

#include<iostream>
#include<math.h>
using namespace std;
int main(){
int a,b,c;
c = 1;
cin >> a >> b;
c = pow(10,b-1);
a = a - (a % c);
if((a / c > 0 && a / c < 10)||(a == 0 && c == 1)){
cout << "Yes";
}else{
cout << "No";
}
return 0;
}