#include <bits/stdc++.h>

void solve() {
    std::vector<std::string> a = {"watermelon", "beachball", "shrinebell"};
    std::vector<std::string> b(2);
    for (int i = 0; i < 2; i++) std::cin >> b[i];
    for (int i = 0; i < 3; i++) {
        bool ok = true;
        for (int j = 0; j < 2; j++) {
            if (a[i] == b[j]) {
                ok = false;
            }
        }
        if (ok) {
            std::cout << a[i] << '\n';
        }
    }
}

int main() {
    std::cin.tie(0)->sync_with_stdio(0);
    std::cout << std::fixed << std::setprecision(16);
    int t = 1;

    while (t--) solve();
}