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)

#include <stdio.h>

int main()
{
  int n, i, x;
 
  	if(scanf("%d", &n)== 1);
 
  if (n <= 81)  {
  	for( i=1; i<=9; ++i ){
  		if( n%i ==0 ){
          if(n/i < 9){
    	 	++x;
          }else{
            if(i ^ 2 == n){
              ++x;
            }
          }
  		}
  	}
  }
  
    if(x > 1){
      printf("Yes");
    }else{
      printf("No");
    }
  return 0;
}