#include<bits/stdc++.h>
using namespace std;
bool ss(int n){
    bool r=true;
    if(n<=1) r=false;
    else{
        for(int i=2;i<=sqrt(n);i++){
            if(n%i==0){
                r=false;
                break;
            }
        }
    }
     
    return r;
     
}
int main(){
  //cout<<ss(5);
    int n;
    cin>>n;
    bool f=false;
    for(int i=2;i<=sqrt(n);i++){
        if(n%i==0&&ss(i)&&ss(n/i)){
           f=true;
           break;
        }
     
    }
    if(f==true)cout<<"It's a Tongtong number.";
    else cout<<"It's not a Tongtong number.";
         
    return 0;
}
/**************************************************************
	Problem: 1151
	User: wangyousi
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/