#include <iostream>
#include <iomanip>
#include <stack>
#include <queue>
#include <string>
#include <vector>
#include <cmath>
#include <algorithm>
#include <deque>
#include <set>
#include <map>
#include <bitset>
#include <ctype.h>
#include <numeric>
#include<unordered_set>

using namespace std;
using ll = long long;

//yukicoder414C
int main() {
	string s, t;
	cin >> s >> t;

	set<string> st = { "watermelon", "beachball", "shrinebell" };
	
	st.erase(s);
	st.erase(t);

	cout << *st.begin() << endl;
	
}