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

string S, T;

int main() {
	cin >> S >> T;
	if (S != "watermelon" && T != "watermelon") cout << "watermelon" << endl;
	else if (S != "beachball" && T != "beachball") cout << "beachball" << endl;
	else cout << "shrinebell" << endl;
	return 0;
}