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)

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>

int main()
{
  int input;
  int i,j;
  scanf("%d",&input);
  
  if(input<10){
    printf("Yes\n");
  }
  else if(input>81){
    printf("No\n");
  }
  else if(1){
    j = 0;
    for(i=2;i<=9;i++){
      if( (input%i)==0 && (input/i)<10 ){
        j = 1;
        break;
      }
      else{
        j = 2;
      }
    } 
  }
  
  if(j==1){
    printf("Yes\n");
  }
  if(j==2){
    printf("No\n");
  }
             
  
  return 0; 
}