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 5.4.1) (judge verdict: Wrong Answer)

#include <stdio.h>
int main()
{
	int n,a,b;
	
	scanf("%d",&n);
	
	b=n;
	
	a=n%10;
	
	if(a==9){
		printf("Yes\n");
		printf("The one's digit of %d is 9.\n",n);
	}
	else {
		
		a=n/10;
		
		if(a==9){
			printf("Yes\n");
		}
		
		else{
			printf("No\n");
			printf("%d does not contain 9.\n",n);
		}
		
		
	}
	
	return 0;
}