#include <bits/stdc++.h>
using ll = long long;
using llu = long long unsigned;

using namespace std;

int main() {
    string S;
    cin >> S;

    string ret = "Yes";
    for (auto x:S) {
        if (x!='9') { ret = "No"; break; }
    }
    cout << ret << endl; return 0;
}