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: Accepted)

#include<stdio.h>

int yon(int a){

  while(a){
    if(a%10==9) return 1;
     a=a/10;
  }
  return 0;
}

int main(void)
{
  int n,a;

  scanf("%d",&n);

  if(a=yon(n))
    printf("Yes\n");
  else
    printf("No\n");

  return 0;
}