#include <iostream>

using namespace std;

int main()
{
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	string S, T;
	cin >> S >> T;

	if (S == "watermelon")
	{
		if (T == "beachball") cout << "shrinebell\n";
		else cout << "beachball\n";
	}
	else if (S == "beachball")
	{
		if (T == "watermelon") cout << "shrinebell\n";
		else cout << "watermelon\n";
	}
	else
	{
		if (T == "watermelon") cout << "beachball\n";
		else cout << "watermelon\n";
	}

	return 0;
}