'use strict'

const main = input => {
	const args = input.split('\n').map(arg => arg.split(' '))
	const N = parseInt(args[0][0], 10)
	if (Math.floor(N / 90) === 1 || N % 10 === 9) console.log('Yes')
	else console.log('No')
}

main(require('fs').readFileSync('/dev/stdin', 'utf8'))
