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 (Clang 3.8.0) (judge verdict: Wrong Answer)

#include<stdio.h>

int main(){
	
	int n;
	
	do{
	scanf("%d", &n);
	}while(n<10 || n>99);
	
	if(n%10==9){
		printf("Yes\nThe one's digit of %d is 9.\n", n);
	}
	else if(n/10==9){
		printf("Yes\n", n);
	}
	else{
		printf("No\nThe one's digit of %d is not 9.\n", n);
	}
	
	return 0;
}