#include <iostream>
#include <cstdint>

using namespace std;

int main()
{
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	
	char N[102];
	cin >> N;

	for (uint32_t i = 0; ; ++i)
		switch (N[i])
		{
		case '9':
			break;

		case '\0':
			cout << "Yes\n";
			return 0;

		default:
			cout << "No\n";
			return 0;
		}

	return 1;
}