Problem:
Score : 100 points

Problem Statement

It is September 9 in Japan now.

You are given a two-digit integer N. Answer the question: Is 9 contained in the decimal notation of N?

Constraints

10≤N≤99

Input

Input is given from Standard Input in the following format:

N

Output

If 9 is contained in the decimal notation of N, print Yes; if not, print No.

Sample Input 1

29

Sample Output 1

Yes

The one's digit of 29 is 9.

Sample Input 2

72

Sample Output 2

No

72 does not contain 9.

Sample Input 3

91

Sample Output 3

Yes

Solution in C++14 (GCC 5.4.1) (judge verdict: Accepted)

#include <iostream>
#include <math.h>
int main(){

    int N;
    std::cin >> N;
    int sum = 0;
    for(int i= 0;i < 2; ++i){
        int wari = N*pow(10,-i);
        if(wari % 10 == 9){
            sum++;
        }
    }
    if(sum){
        std::cout << "Yes" << std::endl;
    }else{
        std::cout << "No" << std::endl;
    }
     
    
    return 0;
}