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,c,d;
	scanf("%d",&a);
	if(a>=10&&a<=99)
	{
	b=a%10;
	c=a/10;
	d=c%10;
	if(b==9||d==9)
	
	printf("YES\nThe one's digit of %d is 9.",a);
	else
	printf("NO\n %d does not contain 9.",a);
}
  
else printf("输入错误");
return 0;
	
}