// Arup Guha
// 6/24/2025
// Solution to Kattis Problem: Left Beehind
// https://open.kattis.com/problems/leftbeehind

using namespace std;
#include <bits/stdc++.h>

int main() {

    int sweet, sour;
    cin >> sweet >> sour;

    // Bee careful, one of these CAN be zero!
    while (sweet != 0 || sour != 0) {

        // This takes precedence.
        if (sweet + sour == 13)
            cout << "Never speak again." << endl;

        // Equal case.
        else if (sweet == sour)
            cout << "Undecided." << endl;

        // More sweet.
        else if (sweet > sour)
            cout << "To the convention." << endl;

        // More sour.
        else
            cout << "Left beehind." << endl;

        cin >> sweet >> sour;
    }

    return 0;
}