#include <bits/stdc++.h>
#ifdef LOCAL
#include "./debug.cpp"
#else
#define debug(...)
#define print_line
#endif
using namespace std;
using ll = long long;

int main() {
	vector<string> str = {"watermelon", "beachball", "shrinebell"};
	string s, t;
	cin >> s >> t;
	str.erase(find(str.begin(), str.end(), s));
	str.erase(find(str.begin(), str.end(), t));
	cout << str.front() << endl;
}