Problem:
Score : 200 points

Problem Statement

Having learned the multiplication table, Takahashi can multiply two integers between 1 and 9 (inclusive) together.

Given an integer N, determine whether N can be represented as the product of two integers between 1 and 9. If it can, print Yes; if it cannot, print No.

Constraints

1 \leq N \leq 100

N is an integer.

Input

Input is given from Standard Input in the following format:

N

Output

If N can be represented as the product of two integers between 1 and 9 (inclusive), print Yes; if it cannot, print No.

Sample Input 1

10

Sample Output 1

Yes

10 can be represented as, for example, 2 \times 5.

Sample Input 2

50

Sample Output 2

No

50 cannot be represented as the product of two integers between 1 and 9.

Sample Input 3

81

Sample Output 3

Yes

Solution in C (GCC 5.4.1) (judge verdict: Wrong Answer)

/* ex3_4
  terakura */

#include <stdio.h>

int main(void){
    int number, a = 9;
    scanf("%d", &number);

//2〜9で割り切れてかつ商が一桁のものを探す
    while(a > 1){
        if(number%a == 0 && number/a < 10){
            printf("yes\n");
            break;      //見つかったら”yes”で終了

        }else{
            a--;
        }

//上で見つからなかったら終了
    if(a == 1){
        printf("no\n");
    }

}
}