#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: hulaoshi
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/