#include <bits/stdc++.h>
using namespace std;
void fast_io() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
}

int main() {
    fast_io();
    string n;
    cin >> n;
    if (all_of(n.begin(), n.end(), [](char x) { return x == '9'; })) {
        cout << "Yes\n";
    } else {
        cout << "No\n";
    }
}