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 a ,b,N;
	scanf("%d",&N);
	a = N%10;
	b = (N-a)/10;
	if (a == 9){
		printf("Yes \n");
	printf("The one's digit of %d is 9.",N);
}else if(b ==9){
		printf("Yes \n");
}  
printf("No\n");
printf("%d does not contain 9.",N);
return 0 ;
}