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++ (GCC 9.2.1) (judge verdict: Wrong Answer)

#include<bits/stdc++.h>
#define yes cout<<"Yes"<<endl;
#define no cout<<"No"<<endl;
#define ll long long int
using namespace std;
int main()
{
    ll tc;
    ll a,b,c,n,x,y,z,cnt=0,sum=0;
    string str;
    cin>>str;
    if(str[0]==9||str[1]==9)
    {
        yes;
        return 0;
    }
    else no

}