#include <iostream>
using namespace std;

int main() {

enum answer { yes, no, maybe = -1 , impossible} my_answer;

 cout << "yes is "        << yes        << endl;
 cout << "no is "         << no         << endl;
 cout << "maybe is "      << maybe      << endl;
 cout << "impossible is " << impossible << endl;
 cout <<endl;

 my_answer = maybe;

 cout << "my answer is " << my_answer;
 cout << endl;
}