ABC073A - September 9

問題：A - September 9

#include <iostream>
using namespace std;

int main(void) {
    int n;

    cin.tie(0);
    ios::sync_with_stdio(false);
    cin >> n;
    cout << (n / 10 == 9 || n % 10 == 9? "Yes" : "No") << "\n";
    return 0;
}