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 9.2.1) (judge verdict: Accepted)

#include<stdio.h>
#include<stdbool.h>
#include<string.h>
#include<math.h>
#include<stdlib.h>
#define rep(i,n) for(int i=0; i <(n); i++)

int compint(const void *a,const void *b){
  return *(int *)a-*(int *)b;
}
int main(){
  char s[3];
  scanf("%s",s);
  int len=strlen(s);
  rep(i,len){
    if(s[i]=='9'){
      printf("Yes\n");
      return 0;
    }
  }
  printf("No\n");
  return 0;
}