#include <iostream>
#include <string>

using namespace std;

string str;

int main()
{
    while (1)
    {
        getline(cin, str);
        if (str.back() == '?') cout << "Quack!" << endl;
        else if (str.back() == '.') cout << "*Nod*" << endl;
        else break;
    }
    return 0;
}