Untitled

// Online C++ compiler to run C++ program online
#include <iostream>
#include <set>
using namespace std;

int main() {
    string username;
    cin >> username;
    set<char> characters;
    for (char c : username) {
        characters.insert(c);
    }
    if (characters.size() 2 == 0) {
        cout << "even" << endl;