#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef unsigned long long ull;
typedef long double ld;
int dx[8]={1,0,-1,0,1,1,-1,-1},dy[8]={0,1,0,-1,1,-1,1,-1};
const long long mod = 998244353;
const ll inf = 1LL<<60;
const int INF = 5e8;



int main(){
    string s;
    cin >> s;
    sort(s.begin(),s.end());
    if(s[0]=='9' and s.back()=='9'){
        cout << "Yes" << endl;
    }else{
        cout << "No" << endl;
    }
}