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++14 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int sum=0;
  int a=1;
  int b=0;
  for(int i=0;i<9;i++) {
    if(n%a==0) {
      b=n/a;
      if(b<=9){
        sum+=1;}
      else {
        sum+=0;}}
    else {
      sum+=0;}}
  if(sum>0) {
    cout << "Yes" << endl;}
  else {
    cout << "No" << endl;}
  return 0;
  }