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 9.2.1) (judge verdict: Wrong Answer)

#include<bits/stdc++.h>
using namespace std;
#define lli long long int
#define pii pair<int,int>
#define pll pair<lli,lli>
#define vi  vector<int>
#define vii vector<pair<int,int>>
#define vll vector<lli>
#define pb  push_back
#define mp  make_pair
#define ss  second
#define ff  first
#define all(x) x.begin(),x.end()
const lli mod = 1e9+7;
//#ifndef ONLINE_JUDGE
//    freopen("input.txt", "r", stdin);
//    freopen("output.txt", "w", stdout);
//    #endif
lli p2(lli n){lli ans=0;while(n>=1){n=n/2;ans++;}return ans;}
lli b_ex(lli n,lli a){lli res=1;while(n){if(n%2==1)res*=a;n>>=1;a=a*a;}return res;}
lli ncr(lli n,lli k){lli ans=1;if(k>n-k)k=n-k;for(lli i=1;i<=k;i++){ans*=(n-i+1),ans=ans/i;}return ans;}
lli add(lli a,lli b){return(a+b)%mod;}
lli mul(lli a,lli b){return (a*b)%mod;}
lli power(lli a , lli n){lli ans = 1;while(n){if(n % 2)ans = (ans * a) % mod;n /= 2;a = (a * a) % mod;}return ans;}
lli lcm(lli a,lli b)
{
    lli ans=(a*b)/(__gcd(a,b));
    return ans;
}

int main()
{
    int n;cin>>n;
    if(n<=0 or n>81)cout<<"No\n";
    else
    {
        for(int i=2;i<=9;i++)
        {
            if(n%i==0 and n/i <= 9)
            {
                cout<<"Yes\n";return 0;
            }
        }
        cout<<"No\n";
    }
}