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: Accepted)

/* ex3_4
   urah  */

#include <stdio.h>

int main(void){
    int num, num_init;

    // 入力を受け取る
    scanf("%d", &num);

    // numの初期値を保持しておく
    num_init = num;

    // ループを使って解く
    for (int i=1; i <= 9; i++) {
        // 一回でも1~9で割り切れた場合
        if (num % i == 0) { 
            num = num / i;
            for (int j = 1; j <= 9; j++){
                // 商は1~9のいずれかであるか
                if (num == j) {
                    printf("Yes\n");
                    return 0;
                }
            }
            // numをiで割っているのでもとに戻す
            num = num_init;
        }
    }

    printf("No\n");
    return 0;
}